Fix tests under wal_level=minimal

Buildfarm members which have specifically configured to use
wal_level=minimal fail the repack regression tests, which require
wal_level=replica.  Add a temp config file to fix that.

src/test/modules/injection_points/Makefile

@@ -19,6 +19,9 @@ ISOLATION = basic \
 	    syscache-update-pruned \
 	    heap_lock_update
 
+# some isolation tests require wal_level=replica
+ISOLATION_OPTS = --temp-config $(top_srcdir)/src/test/modules/injection_points/extra.conf
+
 # The injection points are cluster-wide, so disable installcheck
 NO_INSTALLCHECK = 1
 

src/test/modules/injection_points/extra.conf

@@ -0,0 +1 @@
+wal_level=replica

src/test/modules/injection_points/meson.build

@@ -53,5 +53,9 @@ tests += {
     'runningcheck': false, # see syscache-update-pruned
     # Some tests wait for all snapshots, so avoid parallel execution
     'runningcheck-parallel': false,
+    # some tests require wal_level=replica
+    'regress_args': [
+      '--temp-config', files('extra.conf'),
+    ],
   },
 }