qa/suites: set initial require_min_compat_client

For cases where we are selecting crush tunables beyond the default
min of hammer.

Signed-off-by: Sage Weil <sage@redhat.com>

qa/suites/rados/basic/tasks/readwrite.yaml

@@ -2,6 +2,8 @@ overrides:
   ceph:
     crush_tunables: optimal
     conf:
+      mon:
+        mon osd initial require min compat client: luminous
       osd:
         osd_discard_disconnected_ops: false
 tasks:

qa/suites/rados/thrash/workloads/small-objects.yaml

@@ -1,6 +1,9 @@
 overrides:
   ceph:
     crush_tunables: jewel
+    conf:
+      mon:
+        mon osd initial require min compat client: jewel
 tasks:
 - rados:
     clients: [client.0]