Merge "Detect when Debian is used to launch libvirtd"

Author: Jenkins

lib/nova_plugins/functions-libvirt

@@ -57,7 +57,7 @@ cgroup_device_acl = [
 EOF
     fi
 
-    if is_ubuntu; then
+    if [ "$os_VENDOR" = "Ubuntu" ]; then
         LIBVIRT_DAEMON=libvirt-bin
     else
         LIBVIRT_DAEMON=libvirtd