Explicitly set connection_type to libvirt

A future merge to nova (http://review.openstack.org/2918) will require this to be set

Change-Id: I92c28336a6022c325a84d6594764779d8fe5e655
diff --git a/AUTHORS b/AUTHORS
index 84a565e..34e0474 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -10,6 +10,7 @@
 Jason Cannavale <jason.cannavale@rackspace.com>
 Jay Pipes <jaypipes@gmail.com>
 Jesse Andrews <anotherjesse@gmail.com>
+Johannes Erdfelt <johannes.erdfelt@rackspace.com>
 Justin Shepherd <galstrom21@gmail.com>
 Kiall Mac Innes <kiall@managedit.ie>
 Scott Moser <smoser@ubuntu.com>