Snap for 8082048 from df52249327b2885b9c2a5c413398c71714cf2cad to sc-v2-release

Change-Id: Iaf6d98e88326d72df3c91ff6f101c9ab17638f98
diff --git a/stats/atoms.proto b/stats/atoms.proto
index ce1524c..256556b 100644
--- a/stats/atoms.proto
+++ b/stats/atoms.proto
@@ -17183,8 +17183,9 @@
  */
 message SipMessageResponse {
     enum Direction {
-        INCOMING = 0;
-        OUTGOING = 1;
+        UNKNOWN = 0;
+        INCOMING = 1;
+        OUTGOING = 2;
     }
     // the carrier id associated with this SIP delegate
     // Used as a dimension
@@ -17223,8 +17224,9 @@
  */
 message SipTransportSession {
     enum Direction {
-        INCOMING = 0;
-        OUTGOING = 1;
+        UNKNOWN = 0;
+        INCOMING = 1;
+        OUTGOING = 2;
     }
     // the carrier id associated with this SIP delegate
     // Used as a dimension