Comment 7 for bug 1883683

There has been work done in the image release process to address this.

In addition, there was a recent change in QABro to add more ways to find the buildstamp:

https://code.launchpad.net/~patliu/qabro/+git/qabro/+merge/397066

I'll close this issue for now. If we find this problem in the future, we will open a new issue.