BZ #1056383 - Foreman Controller's swift proxy no longer runs ...

https://bugzilla.redhat.com/show_bug.cgi?id=1056383

Build the ringbuilder files on the proxy if no devices exist on its
ring files yet.
BZ #1049633 - Foreman should support VXLAN

https://bugzilla.redhat.com/show_bug.cgi?id=1049633

A couple of the variables inside the compute and networker classes were missing
the 'ovs_' part of the param name.
Merge pull request #125 from jguiditta/vxlan_param_fix

BZ #1049633 - Foreman should support VXLAN
Merge pull request #114 from cwolferh/bz1056383_swift_ringbuilder_on_proxy

 BZ #1056383 - Foreman Controller's swift proxy no longer runs ...