Fix case for "a knob is changed and a single process in the primary region is partitioned"

[johscheuer]

What would you like to be added/changed?

In our test suite for the velocity of the operator (knob rollout) we have a test called "a knob is changed and a single process in the primary region is partitioned" this test will fail most of the time as that single process will never be updated, and that will block the other clusters from getting a lock. We have to see if there is a better way to solve this issue in the operator. Right now the test will be marked as pending until we develop a reliable solution for it.