FTTH-50632 [log modification of controller and vpagent  package]

Change-Id: Ib46bd1dbd7ba759a1b25f22b377dcefa3a289919
diff --git a/internal/pkg/vpagent/packetOut.go b/internal/pkg/vpagent/packetOut.go
index d5787dd..00fbf5b 100644
--- a/internal/pkg/vpagent/packetOut.go
+++ b/internal/pkg/vpagent/packetOut.go
@@ -31,7 +31,7 @@
 		logger.Debug(ctx, "packet-out-finished")
 	}()
 	if vpa.volthaClient == nil {
-		logger.Error(ctx, "no-voltha-connection")
+		logger.Fatal(ctx, "no-voltha-connection")
 		return
 	}
 	opt := grpc.EmptyCallOption{}