Lookaside score from WiredTiger fed into the calculation used for MongoDB snapshot window size calculation. Since the lookaside is being replaced by the history store and the cache-usage / cache-pressure behaviour and statistics are not clear at the moment, there is no replacement available to the lookaside score. While we investigate a replacement in the future (WT-5499), we have decided to set the lookaside score to 0 (WT-5576), but this will lead to the snapshot window not adjusting to the cache pressure MongoDB unit test tries to create.

This ticket will stop running the unit test CreateAndCheckForCachePressure, till WT-5499 comes up with an alternate way to determine cache pressure.