AUM tests show sporadic errors

Affected images versions

all

Background

AUM tests try to exercise different aspects of the upgrade process. Usually this tests report as succeed, but from time to time, sporadic errors appear.

Reproducibility

How often the issue is hit when repeating the test and changing nothing (same device, same image, etc.)?

Put the ✅ in the most appropriate entry:

1. always
2. often, but not always
3. ✅ rarely

Impact of bug

AUM status is not clear

Root cause

TBC

Outcomes

• tests/aum-offline-upgrade!52 (merged)
• tests/aum-offline-upgrade!53 (merged)
• tests/aum-offline-upgrade!54 (closed)
• tests/aum-offline-upgrade!55 (merged)

Management data

This section is for management only, it should be the last one in the description.

/cc @andrunko @em @sagar @sudarshan @wlozano

Phabricator link: https://phabricator.apertis.org/T9906