Turn metadata sync on in add_coordinator, foreign_key_to_reference_table and replicate_reference_tables_to_coordinator

src/test/regress/expected/add_coordinator.out

@@ -2,6 +2,7 @@
 -- ADD_COORDINATOR
 --
 SELECT master_add_node('localhost', :master_port, groupid => 0) AS master_nodeid \gset
+NOTICE:  localhost:xxxxx is the coordinator and already contains metadata, skipping syncing the metadata
 -- adding the same node again should return the existing nodeid
 SELECT master_add_node('localhost', :master_port, groupid => 0) = :master_nodeid;
  ?column?

src/test/regress/expected/replicate_reference_tables_to_coordinator.out

@@ -506,6 +506,7 @@ SELECT master_remove_node('localhost', :master_port);
 SELECT master_add_node('localhost', :master_port, groupid => 0) AS master_nodeid \gset
 NOTICE:  Replicating reference table "squares" to the node localhost:xxxxx
 NOTICE:  Replicating reference table "numbers" to the node localhost:xxxxx
+NOTICE:  localhost:xxxxx is the coordinator and already contains metadata, skipping syncing the metadata
 -- clean-up
 SET client_min_messages TO ERROR;
 DROP SCHEMA replicate_ref_to_coordinator CASCADE;

src/test/regress/multi_1_schedule

@@ -280,10 +280,10 @@ test: multi_foreign_key_relation_graph
 # and rerun some of the tests.
 # --------
 test: check_mx
-test: turn_mx_off
 test: add_coordinator
 test: foreign_key_to_reference_table
 test: replicate_reference_tables_to_coordinator
+test: turn_mx_off
 test: citus_local_tables
 test: multi_row_router_insert mixed_relkind_tests
 test: turn_mx_on