BloomK Filter probing method is not thread safe

As far i can tell this is not an issue for Hive yet (most of the usage of probing seems to be done by one thread at a time) but it is an issue of other users like Druid as per the following issue.https://github.com/apache/incubator-druid/issues/6546

The fix is proposed by the author of https://github.com/apache/incubator-druid/pull/6584 is to make couple of local fields as ThreadLocals.

Idea looks good to me and doesn't have any perf drawbacks.