Print 'Restarting file logging' message as NOTICE
Print 'Restarting file logging' message as NOTICE

Reducing this from WARNING to NOTICE.

Change-Id: Ib2f335577cdb9d6619a2b7ccd161882e00be7e6d
Reviewed-on: http://review.couchbase.org/78405
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>

daverigby/kv_engine,couchbase/memcached,couchbase/memcached,couchbase/memcached,daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine,couchbase/memcached