If the network is encrypted with msgr2, cephfs requires
the mount options to include ms_mode=secure. Now this
will be set by default if the mount options are not
already set in the cephcluster CR or the operator env
var CSI_CEPHFS_KERNEL_MOUNT_OPTIONS.
Signed-off-by: Travis Nielsen <tnielsen@redhat.com>
(cherry picked from commit 6309cd367e)