VOL-1406: Deploy voltha 2.0 in a k8s cluster

- Also added sleep to watching rw-core to ensure that the
  watching core does not respond to a request before the
  core that seized it.

Change-Id: I9998975b6dda42b3bd58112115c5122bf2b49d42
diff --git a/rw_core/core/transaction.go b/rw_core/core/transaction.go
index a8bcfd6..397299e 100644
--- a/rw_core/core/transaction.go
+++ b/rw_core/core/transaction.go
@@ -217,6 +217,10 @@
 	default:
 		acquired = false
 	}
+	// Ensure the request watcher does not reply before the request server
+	if !acquired {
+		time.Sleep(1 * time.Second)
+	}
 	return acquired
 }