SEBA-566 Add linting and fix errors in vrouter

Change-Id: I6a23b747e9b20c93c8b4443e98504a43d8464874
diff --git a/requirements.txt b/requirements.txt
index e039eea..669c29b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-xossynchronizer~=3.0.1
-xosapi~=3.0.1
-xoskafka~=3.0.1
+xossynchronizer~=3.2.1
+xosapi~=3.2.1
+xoskafka~=3.2.1