SEBA-497 delayering, Makefile, and tox for volt-synchronizer

Change-Id: I68125659442e9d53720f7f327f66f335b97d5b5a
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..e039eea
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,3 @@
+xossynchronizer~=3.0.1
+xosapi~=3.0.1
+xoskafka~=3.0.1