The test "does not validate checkpoints while the server parameter is disabled" does not work when {[enableContinuousInternodePerCollectionValidation}} defaults to true, so we need to explicitly set enableContinuousInternodePerCollectionValidation to false in that test.

Also, checkpointsValidated == 0 must become == validatedBefore because the counter is cumulative since process start, so when the parameter defaults to true, the standby could validate checkpoints before we turn the paramater off.