Merge pull request #6765 from rooftopcellist/fix_flake_zuul

revert back to the old way of calling flake8 linter

Reviewed-by: https://github.com/apps/softwarefactory-project-zuul

setup.cfg

@@ -22,6 +22,7 @@ exclude=.tox,venv,awx/lib/site-packages,awx/plugins/inventory,awx/ui,awx/api/url
 
 [testenv:linters]
 deps =
+  make
   flake8
   yamllint
 commands =