Make tuskar element supply tripleo-heat-templates

Tuskar API service requires tripleo-heat-templates on start,
so it's the task of tuskar image element to clone t-h-t git
repo and do a checkout of the given tag or commit id.

Blueprint: tripleo-heat-templates

Change-Id: Ife3ae07bc6ce43e4593b4874cd52be87c900166c
Use cinder.conf for auth_token configs.

Updates the cinder element so that we use the application config file
(cinder.conf) instead of the Cinder api-paste.ini config file.

Related-Bug: #1240753

Change-Id: I6636d33ee522757145ac97fc354324a8b9379700
Merge "Use cinder.conf for auth_token configs."
Use nova.conf for auth_token configs.

Updates the nova element so that we use the application config file
(nova.conf) instead of the Nova api-paste.ini config file.

Related-Bug: #1240753

Change-Id: I393a67f1f005e775928130c9241aa7e25c391ae3
Merge "Use nova.conf for auth_token configs."
Merge remote-tracking branch 'upstream/master'
added mysql-devel package to support mysql-python
Merge branch 'master' of github.com:rbrady/tripleo-image-elements