With the recent changes meant to allow deployment of Ganesha on the
"external" network, the CephNfs service can be added to more roles
than just ControllerStorageNfs.
Change-Id: Ic9010307c2aab7041c8ae30c72cc1bf99fdd22f6
Closes-Bug: 1961578
(cherry picked from commit e1de2bcb72)
(cherry picked from commit 31eafc7353)