Migrates corosync element to svc-map

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

Change-Id: I2081a945375fe0b8a72de3396b0d862f72b50928
Merge "Migrates corosync element to svc-map"