Fix test failure with -DENFORCE_REGRESSION_TEST_NAME_RESTRICTIONS

Replication origins created by regression tests should have names
starting with "regress_", and the test introduced in b1e48bbe for commit
timestamps did not do that.

Per buildfarm member longfin.

Discussion: https://postgr.es/m/20200712122507.GD21680@paquier.xyz

src/test/modules/commit_ts/expected/commit_timestamp.out

@@ -88,14 +88,14 @@ SELECT x.timestamp <@ tstzrange('-infinity'::timestamptz, now()) AS ts_in_range,
 (1 row)
 
 -- Test transaction with replication origin
-SELECT pg_replication_origin_create('test_commit_ts: get_origin') != 0
+SELECT pg_replication_origin_create('regress_commit_ts: get_origin') != 0
   AS valid_roident;
  valid_roident 
 ---------------
  t
 (1 row)
 
-SELECT pg_replication_origin_session_setup('test_commit_ts: get_origin');
+SELECT pg_replication_origin_session_setup('regress_commit_ts: get_origin');
  pg_replication_origin_session_setup 
 -------------------------------------
  
@@ -105,17 +105,17 @@ SELECT txid_current() as txid_with_origin \gset
 SELECT x.timestamp <@ tstzrange('-infinity'::timestamptz, now()) AS ts_in_range, r.roname
   FROM pg_last_committed_xact() x, pg_replication_origin r
   WHERE r.roident = x.roident;
- ts_in_range |           roname           
--------------+----------------------------
- t           | test_commit_ts: get_origin
+ ts_in_range |            roname             
+-------------+-------------------------------
+ t           | regress_commit_ts: get_origin
 (1 row)
 
 SELECT x.timestamp <@ tstzrange('-infinity'::timestamptz, now()) AS ts_in_range, r.roname
   FROM pg_xact_commit_timestamp_origin(:'txid_with_origin') x, pg_replication_origin r
   WHERE r.roident = x.roident;
- ts_in_range |           roname           
--------------+----------------------------
- t           | test_commit_ts: get_origin
+ ts_in_range |            roname             
+-------------+-------------------------------
+ t           | regress_commit_ts: get_origin
 (1 row)
 
 SELECT pg_replication_origin_session_reset();
@@ -124,7 +124,7 @@ SELECT pg_replication_origin_session_reset();
  
 (1 row)
 
-SELECT pg_replication_origin_drop('test_commit_ts: get_origin');
+SELECT pg_replication_origin_drop('regress_commit_ts: get_origin');
  pg_replication_origin_drop 
 ----------------------------
  

src/test/modules/commit_ts/expected/commit_timestamp_1.out

@@ -74,14 +74,14 @@ SELECT x.timestamp <@ tstzrange('-infinity'::timestamptz, now()) AS ts_in_range,
 ERROR:  could not get commit timestamp data
 HINT:  Make sure the configuration parameter "track_commit_timestamp" is set.
 -- Test transaction with replication origin
-SELECT pg_replication_origin_create('test_commit_ts: get_origin') != 0
+SELECT pg_replication_origin_create('regress_commit_ts: get_origin') != 0
   AS valid_roident;
  valid_roident 
 ---------------
  t
 (1 row)
 
-SELECT pg_replication_origin_session_setup('test_commit_ts: get_origin');
+SELECT pg_replication_origin_session_setup('regress_commit_ts: get_origin');
  pg_replication_origin_session_setup 
 -------------------------------------
  
@@ -104,7 +104,7 @@ SELECT pg_replication_origin_session_reset();
  
 (1 row)
 
-SELECT pg_replication_origin_drop('test_commit_ts: get_origin');
+SELECT pg_replication_origin_drop('regress_commit_ts: get_origin');
  pg_replication_origin_drop 
 ----------------------------
  

src/test/modules/commit_ts/sql/commit_timestamp.sql

@@ -42,9 +42,9 @@ SELECT x.timestamp <@ tstzrange('-infinity'::timestamptz, now()) AS ts_in_range,
   FROM pg_xact_commit_timestamp_origin(:'txid_no_origin') x;
 
 -- Test transaction with replication origin
-SELECT pg_replication_origin_create('test_commit_ts: get_origin') != 0
+SELECT pg_replication_origin_create('regress_commit_ts: get_origin') != 0
   AS valid_roident;
-SELECT pg_replication_origin_session_setup('test_commit_ts: get_origin');
+SELECT pg_replication_origin_session_setup('regress_commit_ts: get_origin');
 SELECT txid_current() as txid_with_origin \gset
 SELECT x.timestamp <@ tstzrange('-infinity'::timestamptz, now()) AS ts_in_range, r.roname
   FROM pg_last_committed_xact() x, pg_replication_origin r
@@ -54,4 +54,4 @@ SELECT x.timestamp <@ tstzrange('-infinity'::timestamptz, now()) AS ts_in_range,
   WHERE r.roident = x.roident;
 
 SELECT pg_replication_origin_session_reset();
-SELECT pg_replication_origin_drop('test_commit_ts: get_origin');
+SELECT pg_replication_origin_drop('regress_commit_ts: get_origin');