Adding more get voltha apis

Change-Id: I4fe2696e3ffdcb1477e5d97d0405353ab465c062
diff --git a/experiments/netconf/proto2yang/openflow_13.proto b/experiments/netconf/proto2yang/openflow_13.proto
index 0e403fd..c99cd5d 100644
--- a/experiments/netconf/proto2yang/openflow_13.proto
+++ b/experiments/netconf/proto2yang/openflow_13.proto
@@ -2029,7 +2029,7 @@
     ofp_group_type type = 1;       /* One of OFPGT_*. */
     uint32 group_id = 2;           /* Group identifier. */
     repeated ofp_bucket buckets = 3;   /* List of buckets - 0 or more. */
-    /* ofp_group_desc desc = 1; */
+//    ofp_group_desc desc = 1;
     ofp_group_stats stats = 4;
 };