test: Move mirror_replay test to separate schedule due to core dumps

This test is currently causing core dumps when run as part of the
greenplum_schedule. To prevent this from blocking other testing while
we investigate the root cause:

- Created new fixme_schedule containing only mirror_replay
- Removed mirror_replay from greenplum_schedule
- Added installcheck-fixme make target to run problematic tests in
  isolation

Issue: apache#782

src/test/regress/GNUmakefile

@@ -220,6 +220,9 @@ installcheck-cbdb-parallel: all twophase_pqexecparams
 installcheck-tests: all
 	$(pg_regress_installcheck) $(REGRESS_OPTS) $(TESTS) $(EXTRA_TESTS)
 
+installcheck-fixme: all
+	$(pg_regress_installcheck) $(REGRESS_OPTS) --schedule=$(srcdir)/fixme_schedule $(EXTRA_TESTS)
+
 ifeq ($(BUILD_TYPE),prod)
 .PHONY: installcheck-icudp
 installcheck-icudp:

src/test/regress/fixme_schedule

@@ -0,0 +1,12 @@
+# ======================================================================
+# Cloudberry-specific tests
+# ----------------------------------------------------------------------
+# These tests have issues
+# ======================================================================
+
+# [Bug] Core Dump in mirror_replay Test Suite During Execution #782
+# https://github.com/apache/cloudberry/issues/782
+
+test: mirror_replay
+
+# end of tests

src/test/regress/greenplum_schedule

@@ -292,7 +292,7 @@ test: oid_wraparound
 # fts_recovery_in_progresss uses fault injectors to simulate FTS fault states,
 # hence it should be run in isolation.
 test: fts_recovery_in_progress
-test: mirror_replay
+ignore: mirror_replay
 test: autovacuum
 test: autovacuum-segment
 test: autovacuum-template0-segment