SW-516: fixed OTDB_Services tests for python3 and messagebus changes. Also...

SW-516: fixed OTDB_Services tests for python3 and messagebus changes. Also made the test test against a local testing postgres database. All contained in python, no hybrid .run/.py tests anymore.

SAS/OTDB_Services/TreeStatusEvents.py

@@ -95,10 +95,13 @@ def main():
     # Set signalhandler to stop the program in a neat way.
     signal.signal(signal.SIGINT, signal_handler)
 
+    create_service(options.busname, dbcreds)
+
+def create_service(busname, dbcreds):
     alive = True
     connected = False
     otdb_connection = None
-    with ToBus(options.busname) as send_bus:
+    with ToBus(busname) as send_bus:
         while alive:
             while alive and not connected:
                 # Connect to the database