mgr/volumes: disable client_respect_subvolume_snapshot_visibility in CephfsConnectionPool::connect

To prevent any type of config change (via mons, args, envvar, tell command) on the ceph-mgr from breaking the volume plugin.

Fixes: https://tracker.ceph.com/issues/71740
Signed-off-by: Dhairya Parmar <[email protected]>

Author: dparmar18

src/pybind/mgr/mgr_util.py

@@ -180,6 +180,8 @@ def connect(self) -> None:
             self.fs.conf_set("client_mount_gid", "0")
             self.fs.conf_set("client_check_pool_perm", "false")
             self.fs.conf_set("client_quota", "false")
+            self.fs.conf_set("client_respect_subvolume_snapshot_visibility",
+                             "false")
             logger.debug("CephFS initializing...")
             self.fs.init()
             logger.debug("CephFS mounting...")