AUM out of space tests fail sporadically

Background

AUM out of space tests fail sporadically, specially on amd64. Somehow the upgrade applies even if the space is limited.

#371 (closed) #411 (closed) #514 (closed) #530 (closed)

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

TBD

Root cause

Test implementation with race conditions

Outcomes

tests/aum-offline-upgrade!59 (merged)

Management data

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

/cc @andrunko @em @Balasubramanian @sudarshan @wlozano

Phabricator link: https://phabricator.apertis.org/T10141