fix vEPC kind in UI

Change-Id: I7e04100651d548b8a0d1130c3df5d8ae6703f34c
diff --git a/xos/vpgwc.xproto b/xos/vpgwc.xproto
index fbe6d24..dac3c17 100644
--- a/xos/vpgwc.xproto
+++ b/xos/vpgwc.xproto
@@ -1,5 +1,6 @@
 option name = "vPGWC";
 option verbose_name = "Virtual Packet Gateway -- Control";
+option kind = "vEPC";
 
 message VPGWCService (Service) {
     option name = "VPGWCService";