[Backport perf-v15] fix(upgrade_test): ignore topology change coordinator errors during upgrades #9481
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The error messages reported in scylladb/scylladb#20754 and scylladb/scylladb#20950 can be ignored till a proper fix is merged, because it's mostly a bad UX.
Need to be reverted when scylladb/scylladb#20754 and scylladb/scylladb#20950 will be fixed.
Testing
PR pre-checks (self review)
backport
labelsReminders
sdcm/sct_config.py
)unit-test/
folder)Fixes #9346
(cherry picked from commit 3c8655d)
Parent PR: #9352