Rollout ClickHouse stateful in order does not work in rare cases

The following discussion from !2135 (closed) should be addressed:

• @arun.sori started a discussion: (+2 comments)

  It looks like the ch-operator e2e test that checks the order for sts is flaky.

  Though the sts are rolled out 1 by 1 it seems their order doesn't look to be guaranteed in the test.