Add missing NO_INSTALLCHECK in commit_ts and test_rls_hooks

This bypasses installcheck if specified, which makes sense for those
modules as they require non-default configuration, something which
typical users don't have.  Those have been missing from the start, still
no back-patch is done.

This will be used by an upcoming patch for MSVC scripts adding support
for NO_INSTALLCHECK as installcheck is the default mode for contrib and
modules for performance reasons in the buildfarm.

Author: Michael Paquier
Reviewed-by: Andrew Dunstan
Discussion: https://postgr.es/m/20181126054302.GI1776@paquier.xyz

src/test/modules/commit_ts/Makefile

@@ -2,6 +2,9 @@
 
 REGRESS = commit_timestamp
 REGRESS_OPTS = --temp-config=$(top_srcdir)/src/test/modules/commit_ts/commit_ts.conf
+# Disabled because these tests require "track_commit_timestamp = on",
+# which typical installcheck users do not have (e.g. buildfarm clients).
+NO_INSTALLCHECK = 1
 
 ifdef USE_PGXS
 PG_CONFIG = pg_config

src/test/modules/test_rls_hooks/Makefile

@@ -9,6 +9,9 @@ EXTENSION = test_rls_hooks
 
 REGRESS = test_rls_hooks
 REGRESS_OPTS = --temp-config=$(top_srcdir)/src/test/modules/test_rls_hooks/rls_hooks.conf
+# Disabled because these tests require "shared_preload_libraries=test_rls_hooks",
+# which typical installcheck users do not have (e.g. buildfarm clients).
+NO_INSTALLCHECK = 1
 
 ifdef USE_PGXS
 PG_CONFIG = pg_config