Based on the native 'grenade' job
OpenStack is dropping the py2.7 support in ussuri cycle.
ironic-inspector is ready with python 3 and ok to drop the
python 2.7 support.
Complete discussion & schedule can be found in
Ussuri Communtiy-wide goal - https://review.opendev.org/#/c/691178/
- Jobs description: Help people understand what each job does in our CI.