update_subscription_facet_backend_data step fails on upgrade
Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1364175
Description of problem:
Upgrade Step: update_subscription_facet_backend_data (this may take a while) ...
This step fails with a traceback
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Install 6.1.9 with Virt-Who and Hypervisors.
2. Upgrade to 6.2.0
Upgrade step update_subscription_facet_backend_data failed. Check logs for more information.
Upgrade completes successfully.
The current workaround is to stop virt-who. Delete the Hypervisors and then do the upgrade. The upgrade will complete successfully and you can start virt-who up to register the hypvervisors and do guest to host mapping.