David Turner d56fc72ee5 Fix node health-check-related test failures (#59277)
In #52680 we introduced a new health check mechanism. This commit fixes
up some sporadic related test failures, and improves the behaviour of
the `FollowersChecker` slightly in the case that no retries are
configured.

Closes #59252
Closes #59172
2020-07-09 12:46:12 +01:00
..