Enforce Py3 for `charm-glance`
The charm has been converted to Py3 and the Py3 jobs should now
vote on changes.
- project:
name: openstack/charm-glance
templates:
- - python-charm-jobs
- - openstack-python35-jobs-nonvoting
+ - python35-charm-jobs
- project:
name: openstack/charm-glance-simplestreams-sync
