i18n_messages: get back a locale needed for testing
    
    Commit f49fac7bda8150aee2086be9afdbe4eb81c3f18a added a special
    workaround to get fr-fr locale translations installed when running
    tests in Travis CI.
    
    Get it back to Azure Pipelines.
    
    Fixes: https://pagure.io/freeipa/issue/7951
    Reviewed-By: Christian Heimes <cheimes@redhat.com>
    Reviewed-By: Rob Crittenden <rcritten@redhat.com>