Distributions provide packages for the OpenStack services so we add
support for using these instead of the pip ones. However, functional
testing is not complete yet since it requires tempest to be in the swift
virtual environment which doesn't exist for distro installs. As such,
for functional testing to cover this method of installation it needs
to be changed quite a bit.
Change-Id: Id75e56440685df407a9991018dc07b5a75429082
Implements: blueprint openstack-distribution-packages
51ea328b7c