[API] Fix systest.
[API] Fix systest.

Missed the new ApiRole attribute in the python bindings.

cloudera/cm_api,cloudera/cm_api,cdapio/cm_api,cdapio/cm_api,cloudera/cm_api,cdapio/cm_api,justinhayes/cm_api,cdapio/cm_api,justinhayes/cm_api,justinhayes/cm_api