MB-10789: [2] Bloomfilter for every vbucket

Add bloomfilter object and support to the vbucket class.

Change-Id: Icfa664d502d5a2fa7523b17fc2d493fc0de13849
Reviewed-on: http://review.couchbase.org/41858
Reviewed-by: Chiyoung Seo <chiyoung@couchbase.com>
Tested-by: abhinav dangeti <abhinav@couchbase.com>