Split of the connect function to create a connection function that return a MongoClient object

This is used for the tests that needs to have access to a connection to be able to drop the test databases

plugins/mongodb_datasource/utils.py

@@ -54,10 +54,13 @@ def connection_string(host, port, db_name, username, password):
     return 'mongodb://%s:%s@%s:%s' % (username, password, host, port)
 
 
+def connection(host, port, username, password):
+    return MongoClient(connection_string(host, port, '', username, password))
+
+
 def connect(host, port, db_name, username, password):
-    connection = MongoClient(
-        connection_string(host, port, db_name, username, password))
-    database = connection[db_name]
+    conn = connection(host, port, username, password)
+    database = conn[db_name]
     return database