using '127.0.0.1' for localhost

registrar_test.py

@@ -17,7 +17,7 @@ def connect_to_db(eo_id):
     global db_name, coverage_id
     connection= None
     try:
-        connection = psycopg2.connect(dbname=database, user=database_user, password=database_password, host='localhost', port=port)
+        connection = psycopg2.connect(dbname=database, user=database_user, password=database_password, host='127.0.0.1', port=port)
         cursor = connection.cursor()
         db_name = connection.get_dsn_parameters()["dbname"]
         postgreSQL_select_Query = "SELECT identifier FROM coverages_eoobject WHERE identifier = '%s';" % eo_id