message: add expected_returncode to auth test
diff: serial: 1
  vars:
  url: "http://nginx-basic-auth.{{ project | regex_replace('_', '-') }}.{{ branch | regex_replace('/', '-') }}.{{ lookup('env','OPENSHIFT_ROUTE_SUFFIX') }}"
  + expected_returncode: 401
  expected_content: "Hello World!"
  user: "username"
  password: "password"
  