Add support for oVirt cloud provider

This patch adds the initial support for the oVirt cloud provider.

Signed-off-by: Federico Simoncelli <fsimonce@redhat.com>

cluster/ovirt/ovirt-cloud.conf

@@ -0,0 +1,9 @@
+# ovirt-cloud.conf
+[connection]
+uri = https://localhost:8443/ovirt-engine/api
+username = admin@internal
+password = admin
+
+[filters]
+# Search queries used to find minions
+vms = tag=kubernetes