Backport v2022 <- v2023: Wait for AUM log before continue testing

Backport !47 (merged)

In some cases the logs for AUM restart are delayed causing false test failures. In order to avoid the issue, wait to the log before continue with the rest of the tests.

infrastructure/apertis-issues#217 (closed)

Signed-off-by: Walter Lozano walter.lozano@collabora.com