SEBA-566 Add linting and fix errors in simpleexampleservice

Change-Id: I9a7fa83f528e70877a19de6f21e1e41a5812741c
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