Reduce verbosity of Ephemeral Tombstone Purger
Reduce verbosity of Ephemeral Tombstone Purger

Reduce from NOTICE to INFO the Ephemeral tombstone progress messages,
as they are pretty verbose (2 lines per minute per Bucket) and consume
quite a bit of log space.

Change-Id: Iadf2fc7979b24dc815ada8eab9c9293ac957f2e0
Reviewed-on: http://review.couchbase.org/82863
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Manu Dhundi <158873d90a7ef40f3637a222b7329c09d0222554@couchbase.com>

daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine