Enable Manila integration - as a composable controller service

Enable Manila integration - as a composable controller service

Allows the installation and configuration of Manila.
Supports the generic driver only. This has a dependency on the
puppet-tripleo classes for manila where the puppet specific
config now lives.

The review at https://review.openstack.org/#/c/315658/ has been
merge into this one, as of v68, so manila lands as a composable
service. This was brought up on the mailing list at [1]

[1] http://lists.openstack.org/pipermail/openstack-dev/2016-May/096126.html

Co-Authored-By: Marios Andreou <marios@redhat.com>
Implements: blueprint composable-services-within-roles
Depends-On: I444916d60a67bf730bf4089323dba1c1429e2e71
Depends-On: I9eda4b3364e5c59342761a1ec71b0eb567c69cf1
Depends-On: I571b65a5402c1028418476a573ebeb9450ed00c9
Change-Id: I7acebac4354fca1f8d7ff6c343c1346bf29b81c6