Follow the rule that regression-test-created roles are named "regress_xxx".

Commit 1c5d9270 had not gotten the word about this.  (For previous
context, see 18555b13.)

src/test/regress/expected/psql.out

@@ -4599,9 +4599,9 @@ last error message: division by zero
 last error code: 22012
 \unset FETCH_COUNT
 create schema testpart;
-create role testrole_partitioning;
-alter schema testpart owner to testrole_partitioning;
-set role to testrole_partitioning;
+create role regress_partitioning_role;
+alter schema testpart owner to regress_partitioning_role;
+set role to regress_partitioning_role;
 -- run test inside own schema and hide other partitions
 set search_path to testpart;
 create table testtable_apple(logdate date);
@@ -4616,23 +4616,23 @@ create index testpart_orange_index on testpart_orange(logdate);
 \dP test*apple*
                                          List of partitioned relations
   Schema  |         Name         |           Owner           |       Type        | Parent name |     Table      
-----------+----------------------+-----------------------+-------------------+-------------+----------------
- testpart | testpart_apple       | testrole_partitioning | partitioned table |             | 
- testpart | testpart_apple_index | testrole_partitioning | partitioned index |             | testpart_apple
+----------+----------------------+---------------------------+-------------------+-------------+----------------
+ testpart | testpart_apple       | regress_partitioning_role | partitioned table |             | 
+ testpart | testpart_apple_index | regress_partitioning_role | partitioned index |             | testpart_apple
 (2 rows)
 
 \dPt test*apple*
                      List of partitioned tables
   Schema  |      Name      |           Owner           | Parent name 
-----------+----------------+-----------------------+-------------
- testpart | testpart_apple | testrole_partitioning | 
+----------+----------------+---------------------------+-------------
+ testpart | testpart_apple | regress_partitioning_role | 
 (1 row)
 
 \dPi test*apple*
                                 List of partitioned indexes
   Schema  |         Name         |           Owner           | Parent name |     Table      
-----------+----------------------+-----------------------+-------------+----------------
- testpart | testpart_apple_index | testrole_partitioning |             | testpart_apple
+----------+----------------------+---------------------------+-------------+----------------
+ testpart | testpart_apple_index | regress_partitioning_role |             | testpart_apple
 (1 row)
 
 drop table testtable_apple;
@@ -4659,73 +4659,73 @@ insert into parent_tab values (generate_series(30,39));
 \dPt
             List of partitioned tables
   Schema  |    Name    |           Owner           
-----------+------------+-----------------------
- testpart | parent_tab | testrole_partitioning
+----------+------------+---------------------------
+ testpart | parent_tab | regress_partitioning_role
 (1 row)
 
 \dPi
                    List of partitioned indexes
   Schema  |     Name     |           Owner           |   Table    
-----------+--------------+-----------------------+------------
- testpart | parent_index | testrole_partitioning | parent_tab
+----------+--------------+---------------------------+------------
+ testpart | parent_index | regress_partitioning_role | parent_tab
 (1 row)
 
 \dP testpart.*
                                        List of partitioned relations
   Schema  |        Name        |           Owner           |       Type        | Parent name  |    Table    
-----------+--------------------+-----------------------+-------------------+--------------+-------------
- testpart | parent_tab         | testrole_partitioning | partitioned table |              | 
- testpart | child_30_40        | testrole_partitioning | partitioned table | parent_tab   | 
- testpart | parent_index       | testrole_partitioning | partitioned index |              | parent_tab
- testpart | child_30_40_id_idx | testrole_partitioning | partitioned index | parent_index | child_30_40
+----------+--------------------+---------------------------+-------------------+--------------+-------------
+ testpart | parent_tab         | regress_partitioning_role | partitioned table |              | 
+ testpart | child_30_40        | regress_partitioning_role | partitioned table | parent_tab   | 
+ testpart | parent_index       | regress_partitioning_role | partitioned index |              | parent_tab
+ testpart | child_30_40_id_idx | regress_partitioning_role | partitioned index | parent_index | child_30_40
 (4 rows)
 
 \dP
                             List of partitioned relations
   Schema  |     Name     |           Owner           |       Type        |   Table    
-----------+--------------+-----------------------+-------------------+------------
- testpart | parent_tab   | testrole_partitioning | partitioned table | 
- testpart | parent_index | testrole_partitioning | partitioned index | parent_tab
+----------+--------------+---------------------------+-------------------+------------
+ testpart | parent_tab   | regress_partitioning_role | partitioned table | 
+ testpart | parent_index | regress_partitioning_role | partitioned index | parent_tab
 (2 rows)
 
 \dPtn
                     List of partitioned tables
   Schema  |    Name     |           Owner           | Parent name 
-----------+-------------+-----------------------+-------------
- testpart | parent_tab  | testrole_partitioning | 
- testpart | child_30_40 | testrole_partitioning | parent_tab
+----------+-------------+---------------------------+-------------
+ testpart | parent_tab  | regress_partitioning_role | 
+ testpart | child_30_40 | regress_partitioning_role | parent_tab
 (2 rows)
 
 \dPin
                               List of partitioned indexes
   Schema  |        Name        |           Owner           | Parent name  |    Table    
-----------+--------------------+-----------------------+--------------+-------------
- testpart | parent_index       | testrole_partitioning |              | parent_tab
- testpart | child_30_40_id_idx | testrole_partitioning | parent_index | child_30_40
+----------+--------------------+---------------------------+--------------+-------------
+ testpart | parent_index       | regress_partitioning_role |              | parent_tab
+ testpart | child_30_40_id_idx | regress_partitioning_role | parent_index | child_30_40
 (2 rows)
 
 \dPn
                                        List of partitioned relations
   Schema  |        Name        |           Owner           |       Type        | Parent name  |    Table    
-----------+--------------------+-----------------------+-------------------+--------------+-------------
- testpart | parent_tab         | testrole_partitioning | partitioned table |              | 
- testpart | child_30_40        | testrole_partitioning | partitioned table | parent_tab   | 
- testpart | parent_index       | testrole_partitioning | partitioned index |              | parent_tab
- testpart | child_30_40_id_idx | testrole_partitioning | partitioned index | parent_index | child_30_40
+----------+--------------------+---------------------------+-------------------+--------------+-------------
+ testpart | parent_tab         | regress_partitioning_role | partitioned table |              | 
+ testpart | child_30_40        | regress_partitioning_role | partitioned table | parent_tab   | 
+ testpart | parent_index       | regress_partitioning_role | partitioned index |              | parent_tab
+ testpart | child_30_40_id_idx | regress_partitioning_role | partitioned index | parent_index | child_30_40
 (4 rows)
 
 \dPn testpart.*
                                        List of partitioned relations
   Schema  |        Name        |           Owner           |       Type        | Parent name  |    Table    
-----------+--------------------+-----------------------+-------------------+--------------+-------------
- testpart | parent_tab         | testrole_partitioning | partitioned table |              | 
- testpart | child_30_40        | testrole_partitioning | partitioned table | parent_tab   | 
- testpart | parent_index       | testrole_partitioning | partitioned index |              | parent_tab
- testpart | child_30_40_id_idx | testrole_partitioning | partitioned index | parent_index | child_30_40
+----------+--------------------+---------------------------+-------------------+--------------+-------------
+ testpart | parent_tab         | regress_partitioning_role | partitioned table |              | 
+ testpart | child_30_40        | regress_partitioning_role | partitioned table | parent_tab   | 
+ testpart | parent_index       | regress_partitioning_role | partitioned index |              | parent_tab
+ testpart | child_30_40_id_idx | regress_partitioning_role | partitioned index | parent_index | child_30_40
 (4 rows)
 
 drop table parent_tab cascade;
 drop schema testpart;
 set search_path to default;
 set role to default;
-drop role testrole_partitioning;
+drop role regress_partitioning_role;

src/test/regress/sql/psql.sql

@@ -1048,11 +1048,11 @@ select 1/(15-unique2) from tenk1 order by unique2 limit 19;
 \unset FETCH_COUNT
 
 create schema testpart;
-create role testrole_partitioning;
+create role regress_partitioning_role;
 
-alter schema testpart owner to testrole_partitioning;
+alter schema testpart owner to regress_partitioning_role;
 
-set role to testrole_partitioning;
+set role to regress_partitioning_role;
 
 -- run test inside own schema and hide other partitions
 set search_path to testpart;
@@ -1114,4 +1114,4 @@ drop schema testpart;
 set search_path to default;
 
 set role to default;
-drop role testrole_partitioning;
+drop role regress_partitioning_role;