Use the Rook image (defined by the operator pod) to detect the Multus
network address ranges. It is reasonable for users to want to have a
minimal Ceph image that does not have the `ip` utility installed, which
is used for detecting the address ranges of multus interfaces. Instead,
use the Rook image, which Rook can ensure has the `ip` tool if Ceph ever
removes it from their image.
Signed-off-by: Blaine Gardner <blaine.gardner@ibm.com>
(cherry picked from commit db1ca8c93e)
Blaine Gardner
d5908d0e3c