Merge branch 'fix-configuration-bug' into 'master'

Fix configuration error

See merge request ro/lofar_stager_api!1

stager_access.py

@@ -73,10 +73,12 @@ for f in ["~/.awe/Environment.cfg", "~/.stagingrc"]:
         print("%s - stager_access: Could not find user credential file \"%s\"." % (datetime.datetime.now(), file))
         continue
 
-    user = credentials["user"]
-    passw = credentials["password"]
+    if 'user' in credentials and 'password' in credentials:
+        user = credentials.get("user")
+        passw = credentials.get("password")
         break
 
+
 if user is not None and passw is not None:
     print("%s - stager_access: Creating proxy" % (datetime.datetime.now()))
     proxy = xmlrpclib.ServerProxy("https://"+user+':'+passw+"@webportal.astron.nl/service-public/xmlrpc")