Mgr sidecar was using a privileged security context because it needed
to create the /var/lib/rook directory, generate the config on it, and
then copy it to the /etc/ceph directory. This change creates empty
directories on /var/lib/rook and /etc/ceph so the mgr sidecar can use
them, removing the need for using a privileged security context.
Fixes: https://github.com/rook/rook/issues/13719
Signed-off-by: Redouane Kachach <rkachach@redhat.com>
(cherry picked from commit db4b3322fa)