Fix: arguments were swapped

mpcdf_common.py

@@ -157,7 +157,7 @@ def mpcdf_enable_repositories(api_url, project, package, verbose=False):
             print("Warning: Could not get attribute MPCDF:enable_repositories for package {0}, skipping".format(package))
         return False
 
-    def try_get_attribute(attribute, package, with_project=False):
+    def try_get_attribute(package, attribute, with_project=False):
         try:
             return get_attribute_values(api_url, project, package, "MPCDF:" + attribute, with_project=with_project)
         except UnsetAttributeException: