qa: disable mon_warn_on_pool_no_app in fs suite

Fixes: https://tracker.ceph.com/issues/65976
Signed-off-by: Patrick Donnelly <[email protected]>

Author: batrick

qa/cephfs/conf/mon.yaml

@@ -5,3 +5,4 @@ overrides:
         mon op complaint time: 120
         # cephadm can take up to 5 minutes to bring up remaining mons
         mon down mkfs grace: 300
+        mon warn on pool no app: false