Package busybox container image for ceph workaround

Package busybox container image for ceph workaround

Busybox image is not packaged for offline deployments, causing
pod to fail coming up as the image is not available in local
docker registry. Adding image to list of images to pull and
package. Busybox repo in the install template is also updated
in order to get rid of duplicated path and adjust it based on
the path it gets on local registry.

Warning  Failed     118s (x4 over 3m56s)        kubelet, master0   Failed to pull image "engine.local/library/busybox/library/busybox:1.32.0": rpc error: code = Unknown desc = Error response from daemon: manifest for engine.local/library/busybox/library/busybox:1.32.0 not found

Change-Id: Ibc173049c1bae5676dde2a686bd6092761dc645d