[1chb1n, r=admcleod] Update cleanup; use mojo from a venv; add ocata mapping
- Use port-cleanup tool to delete neutron ext-ports left over from mojo runs. [Bug 1656306]
- Update and re-enable undercloud instance reaping when error conditions are known. [Bug 1668778]
- Block forever when destroy fails and cleanup fails, where human intervention is required anyway. [Bug 1668778]
- Use mojo from a python virtualenv. [Bug 1666746]
- Use python virtualenv for juju_status_health_check to work around paramiki/crypto IV CTR issues upstream. [Bug 1665598]