composable keystone services

composable keystone services

Adds new puppet and puppet pacemaker specific services for
Keystone.

The puppet manifests for keystone now live in puppet-tripleo.
Hiera settings are driven by the nested stack heat templates
and used to control puppet-keystone and puppet-tripleo
directly.

The Pacemaker template extends the default keystone service and
swaps in the pacemaker specific puppet-tripleo profile instead.

Change-Id: I8b30438a27e9d5ec4e7d335e0bd1a931a20b03a2
Depends-On: I2faf5a78db802549053ec41678bf83bf28108189