suites/fs: add client recovery

Signed-off-by: John Spray <john.spray@redhat.com>

suites/fs/recovery/clusters/2-remote-clients.yaml

@@ -0,0 +1,3 @@
+roles:
+- [mon.a, osd.0, mds.a]
+- [client.0, client.1, osd.1, osd.2]

suites/fs/recovery/mounts/ceph-fuse.yaml

@@ -0,0 +1,8 @@
+tasks:
+- install:
+- ceph:
+- ceph-fuse:
+    client.0:
+        mounted: false
+    client.1:
+        mounted: false

suites/fs/recovery/tasks/client-recovery.yaml

@@ -0,0 +1,11 @@
+
+# The task interferes with the network, so we need
+# to permit OSDs to complain about that.
+overrides:
+  ceph:
+      log-whitelist:
+      - wrongly marked me down
+      - slow request
+
+tasks:
+- mds_client_recovery:

tasks/mds_client_recovery.py

@@ -385,7 +385,7 @@ def task(ctx, config):
 
     # Execute test suite
     # ==================
-    if 'test_name' in config:
+    if config and 'test_name' in config:
         suite = unittest.TestLoader().loadTestsFromName(
             "teuthology.task.mds_client_recovery.{0}".format(config['test_name']))
     else: