MB-10789 [8]: More unit tests for bloomfilters

Change-Id: I95b8937c0d58a4e3ec5ab7e9814184732d27f168
Reviewed-on: http://review.couchbase.org/42732
Reviewed-by: Sundararaman Sridharan <sundar@couchbase.com>
Tested-by: abhinav dangeti <abhinav@couchbase.com>