Couldn't find a relevant downstream bug, and this doesn't seem to have made it into the latest puddle, so ...

All of our stable/newton jobs are failing on an error uploading the overcloud images to glance:

MissingSchema: Invalid URL 'x/v1/images/detail?limit=20': No schema supplied. Perhaps you meant http://x/v1/images/detail?limit=20?

In the debug output, I see:

uploading overcloud images to glance
Instantiating image client: <class 'glanceclient.v1.client.Client'>
Using auth plugin: token_endpoint
Using parameters {'url': 'x', 'token': '***', 'project_name': 'admin'}

So for some reason we are passing 'x' as the url. Switching to glance v2 results in the same error, except with v2 in the path.