MB-19940: Trigger janitor cleanup more frequently.
MB-19940: Trigger janitor cleanup more frequently.

Otherwise, it can delay bucket warmup.

Change-Id: Ie9986bbbe36e5c1bbf430abe9aa73cd29c8df9a5
Reviewed-on: http://review.couchbase.org/73599
Tested-by: Poonam D <6855f09986fe28ed7e8cdd9d60db878d898703d5@couchbase.com>
Reviewed-by: Artem Stemkovski <15a0730a27c69f62ab86f2b6c639fca202166c02@couchbase.com>

membase/ns_server,ceejatec/ns_server,membase/ns_server,membase/ns_server,ceejatec/ns_server,membase/ns_server,ceejatec/ns_server,membase/ns_server,ceejatec/ns_server,ceejatec/ns_server,membase/ns_server,ceejatec/ns_server