Added last_communication timestamp to the adapter proto.

For VOL-2207.  Please consider these related patchsets together:
https://gerrit.opencord.org/#/q/VOL-2207

Change-Id: I75b82143db61d3bb49eb354c6b9e3203d8d6f16a
diff --git a/VERSION b/VERSION
index fd2a018..b502146 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.1.0
+3.0.2