MB-10789: [5] Bloomfilter for sets/gets/deletes/evicts

For VALUE-ONLY EVICTION:
- Add all deletes to bloomfilter
- Check bloomfilter before getMetaData

For FULL EVICTION:
- Add all deletes to bloomfilter
- Add evicted items to bloomfilter

Check bloomfilter, if item not in hashtable for:
    GetInternal, DelWithMeta, DelItem, Add,
    SetWithMeta, Set, GetLocked, Touch, etc.

Change-Id: I2766226228d18b448ad464525ce80e6803a31772
Reviewed-on: http://review.couchbase.org/41861
Reviewed-by: Chiyoung Seo <chiyoung@couchbase.com>
Tested-by: abhinav dangeti <abhinav@couchbase.com>