Add missing CCI call in metadata seq sync

Be explicit about the fact that we've made a modification: we need
subsequent commands to see this sequence.

src/backend/distributed/worker/worker_data_fetch_protocol.c

@@ -482,6 +482,7 @@ worker_apply_sequence_command(PG_FUNCTION_ARGS)
 	/* run the CREATE SEQUENCE command */
 	ProcessUtility(commandNode, commandString, PROCESS_UTILITY_TOPLEVEL,
 				   NULL, None_Receiver, NULL);
+	CommandCounterIncrement();
 
 	createSequenceStatement = (CreateSeqStmt *) commandNode;