increase bucket RAM quota y 10% to address increased mem usage in 3.0+

Change-Id: I7ce550dd13827596f8675d41a9d49fc5c2f8f61d
Reviewed-on: http://review.couchbase.org/41850
Reviewed-by: Venu Uppalapati <venumahesh@gmail.com>
Tested-by: Venu Uppalapati <venumahesh@gmail.com>