Makefile: add initial build rules for combined binary and image
Makefile: add initial build rules for combined binary and image

Add rules and variables to the Makefile so that the unified binary
and container image can be built.

Signed-off-by: John Mulligan <eda8ad33169deab44f9fe65847f99e368da6c91b@redhat.com>

ceph/ceph-csi,ceph/ceph-csi,ceph/ceph-csi,ceph/ceph-csi