Add posibility to install FreeIPA

Unsupported option to setup FreeIPA server and to join hosts into IPA
domnain. In future it might be possible to support this if the IPA node
would be standalone from controller as there are serious caveats othervise.

Closes-Bug: rhbz#903645
Fix several deprecation warnings

database_user -> mysql_user
mysql_module removal
sql_connection -> database_connection

Change-Id: Ia7e22b0d809e40e64dc664f281f7274a4102751c
Signed-off-by: Gael Chamoulaud <gchamoul@redhat.com>

Conflicts:
	packstack/puppet/templates/cinder_rabbitmq.pp