Fix hot standby tests for sequence catalog change

From: Kuntal Ghosh <kuntalghosh.2007@gmail.com>

src/test/regress/expected/hs_standby_allowed.out

@@ -26,7 +26,7 @@ COPY hs1 TO '/tmp/copy_test';
 \! cat /tmp/copy_test
 1
 -- Access sequence directly
-select min_value as sequence_min_value from hsseq;
+select min_value as sequence_min_value from pg_sequences where sequencename = 'hsseq';
  sequence_min_value 
 --------------------
                   1

src/test/regress/sql/hs_standby_allowed.sql

@@ -16,7 +16,7 @@ COPY hs1 TO '/tmp/copy_test';
 \! cat /tmp/copy_test
 
 -- Access sequence directly
-select min_value as sequence_min_value from hsseq;
+select min_value as sequence_min_value from pg_sequences where sequencename = 'hsseq';
 
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