Highlights:
* Add files/rpms/*
* get_packages() only loads deps for services that are enabled
11Apr2012
* change mod_wsgi cwd to $HORIZON_DIR
* fix horizon apache log file name and location
Note: This superceeds https://review.openstack.org/4364
Change-Id: I95486584561e4418907a6a4feb0ffbe4f4ea1843