Description of problem:

Running ansible-playbook --module-path /usr/share/ansible-modules/ -i /usr/bin/tripleo-ansible-inventory -b tripleo-aARWBa-config/fast_forward_upgrade_playbook.yaml

fails with:

TASK [Enable tripleo-repos] ************************************************************************************************************************************************************************************
fatal: [192.168.24.7]: FAILED! => {"changed": true, "cmd": ["tripleo-repos", "-", "b", "o", "c", "a", "t", "a", "c", "u", "r", "r", "e", "n", "t"], "delta": "0:00:00.086074", "end": "2018-02-20 19:32:53.995756", "msg": "non-zero return code", "rc": 2, "start": "2018-02-20 19:32:53.909682", "stderr": "usage: tripleo-repos [-h] [-d DISTRO] [-b BRANCH] [-o OUTPUT_PATH]\n [--centos-mirror CENTOS_MIRROR] [--rdo-mirror RDO_MIRROR]\n REPO [REPO ...]\ntripleo-repos: error: argument REPO: invalid choice: '-' (choose from 'current', 'deps', 'current-tripleo', 'current-tripleo-dev', 'ceph', 'opstools')", "stderr_lines": ["usage: tripleo-repos [-h] [-d DISTRO] [-b BRANCH] [-o OUTPUT_PATH]", " [--centos-mirror CENTOS_MIRROR] [--rdo-mirror RDO_MIRROR]", " REPO [REPO ...]", "tripleo-repos: error: argument REPO: invalid choice: '-' (choose from 'current', 'deps', 'current-tripleo', 'current-tripleo-dev', 'ceph', 'opstools')"], "stdout": "", "stdout_lines": []}
 to retry, use: --limit @/home/stack/tripleo-aARWBa-config/fast_forward_upgrade_playbook.retry

PLAY RECAP *****************************************************************************************************************************************************************************************************
192.168.24.16 : ok=43 changed=24 unreachable=0 failed=1
192.168.24.7 : ok=26 changed=11 unreachable=0 failed=1