Adjust virtlockd sysconfig file to conform to SUSE standards

Index: libvirt-4.2.0/src/locking/virtlockd.sysconf
===================================================================
--- libvirt-4.2.0.orig/src/locking/virtlockd.sysconf
+++ libvirt-4.2.0/src/locking/virtlockd.sysconf
@@ -1,3 +1,7 @@
+## Path: System/Virtualization/virtlockd
+
+## Type: string
+## Default: ""
 #
 # Pass extra arguments to virtlockd
 #VIRTLOCKD_ARGS=