Comment 16 for bug 1590571

Verified on MOS 7.0 + MU5 updates.

Before MU5 updates:
[root@nailgun ~]# fuel --user=admin --password=111 --fuel-version
DEPRECATION WARNING: /etc/fuel/client/config.yaml exists and will be used as the source for settings. This behavior is deprecated. Please specify the path to your custom settings file in the FUELCLIENT_CUSTOM_SETTINGS environment variable.
api: '1.0'
astute_sha: 6c5b73f93e24cc781c809db9159927655ced5012
auth_required: true
build_id: '301'
build_number: '301'
feature_groups:
...
[root@nailgun ~]#
[root@nailgun ~]# fuel --user=admin --password=admin --fuel-version
DEPRECATION WARNING: /etc/fuel/client/config.yaml exists and will be used as the source for settings. This behavior is deprecated. Please specify the path to your custom settings file in the FUELCLIENT_CUSTOM_SETTINGS environment variable.
api: '1.0'
astute_sha: 6c5b73f93e24cc781c809db9159927655ced5012
auth_required: true
build_id: '301'
build_number: '301'
feature_groups:
...

After MU5 updates:
[root@nailgun ~]# fuel --user=admin --password=111 --fuel-version
DEPRECATION WARNING: /etc/fuel/client/config.yaml exists and will be used as the source for settings. This behavior is deprecated. Please specify the path to your custom settings file in the FUELCLIENT_CUSTOM_SETTINGS environment variable.

            Unauthorized: need authentication!
            Please provide user and password via client
             fuel --user=user --password=pass [action]
            or modify "KEYSTONE_USER" and "KEYSTONE_PASS" in
            /etc/fuel/client/config.yaml
[root@nailgun ~]#
[root@nailgun ~]# fuel --user=admin --password=admin --fuel-version
DEPRECATION WARNING: /etc/fuel/client/config.yaml exists and will be used as the source for settings. This behavior is deprecated. Please specify the path to your custom settings file in the FUELCLIENT_CUSTOM_SETTINGS environment variable.
api: '1.0'
astute_sha: 6c5b73f93e24cc781c809db9159927655ced5012
auth_required: true
build_id: '301'
build_number: '301'
feature_groups:
...