sit.cephfs: Disable posix locking for durable handles

Durable handles are only enabled with "kernel oplocks", "kernel
share modes" and "posix locking" disabled. But with mgr variant
"posix locking" was not explicitly disabled and thus few tests
failed.

Signed-off-by: Anoop C S <[email protected]>

Author: anoopcs9

playbooks/ansible/roles/sit.cephfs/templates/ceph.smb.cluster.yml.j2

@@ -42,3 +42,6 @@ resources:
     {%- for addr in ctdb_network_public_interfaces +%}
     - address: {{ addr }}/{{ ctdb_network_public_interface_subnet_mask }}
     {%- endfor +%}
+  custom_smb_global_options:
+    "_allow_customization": "i-take-responsibility-for-all-samba-configuration-errors"
+    "posix locking": "no"