This change updates the glance role to support Ubuntu 14.04 with
upstart init and 16.04 with a systemd init.
Implements: blueprint support-ubuntu-1604
Depends-On: Ib6d7e68133de8d10b81d9116b74dca1de7568897
Change-Id: I39214199e2bbc2bbc5c1b30f8a04aa4e74ed967b
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>