Revert "cs_walrep_1: disable gpactivatestandby tests for now"

Unfortunately the cluster crashes anyway two tests later. Rather than
comment out half the tests to get a fake green, put this set of tests
back. We'll just have to solve this one problem at a time.

This reverts commit 5982a72614492916187ca27fc660d7cc7e3b69e1.

src/test/tinc/Makefile

@@ -61,14 +61,13 @@ storage_persistent_accessmethods_and_vacuum:
 # cs-walrepl-multinode
 walrep_1:
 	$(TESTER) $(DISCOVER) -t tincrepo/mpp/gpdb/tests/storage/walrepl \
+	-s gpactivatestandby \
 	-s gpcrondump \
 	-s gpinitstandby \
 	-s gpstart \
 	-s gpstate \
 	-s gpstop \
 	-s run
-	# WALREP_FIXME: add this back once `pg_ctl promote` works
-	# -s gpactivatestandby \
 
 walrep_2:
 	$(TESTER) $(DISCOVER) -t tincrepo/mpp/gpdb/tests/storage/walrepl \