Migrates glance element from map-services to svc-map

This patch migrates the glance element from map-services
to svc-map by adding a svc-map file and adding the -a option to
os-svc-enable.

Change-Id: I5e5b57d18a8e0923f95296e036c818c44323a017
Merge "Migrates glance element from map-services to svc-map"