manila CI hook: disable glusterfs protocol

manila's cephfs-native CI tests cephfs driver, which does not support
glusterfs protocol. The glusterfs protocol is enabled by a manila's
tempest config option by default. Modify the config option to disable
glusterfs protocol.

Change-Id: Ia7a226d6a8b0ba5aeedcdf34e8a6f9a8dbbfda40
Closes-Bug: #1541377

manila/post_test_hook.sh

@@ -51,6 +51,7 @@ if [[ $MANILA_CEPH_DRIVER == 'cephfsnative' ]]; then
     # Disable tempest config option that enables creation of 'ip' type access
     # rules by default during tempest test runs.
     iniset $TEMPEST_CONFIG share enable_ip_rules_for_protocols
+    iniset $TEMPEST_CONFIG share enable_cert_rules_for_protocols
     iniset $TEMPEST_CONFIG share enable_cephx_rules_for_protocols cephfs
     iniset $TEMPEST_CONFIG share capability_snapshot_support False
     iniset $TEMPEST_CONFIG share backend_names $BACKEND_NAME