OSX: Install correct pip and ansible
OSX: Try ubuntu mktemp first, fail to OSX version
Increase the haproxy http timeout

Based on the fact that we were seeing Horizon 408's, we are updating
this timeout from 5 to 30 seconds.
Add compute1 as a Percona Arbiter
Render templates before packages are installed

The templated config files need to be on disk before the packages are
installed due to the package installation starting up the server and
creating the inital data files which are the wrong size.
Configure size of data files for replication
OSX: Vagrant should set hostnames, controller RAM
Merge pull request #442 from masteinhauser/ursula-osx

Script changes needed for Ursula test environment on OSX
Merge pull request #449 from masteinhauser/vagrant-hostnames

OSX: Vagrant should set hostnames, controller RAM
Merge pull request #448 from blueboxgroup/percona-bootstrap

Percona bootstrap race condition master/slave
Update Horizon to current stable/havana
Merge pull request #446 from craigtracey/haproxytimeout

Increase the haproxy http timeout
enable versioning
swift: allow_versions should be configurable
compute: enable remote libvirt connections

Required for KVM live block migrations.