toybuild with metaEviction :a*o*e

Change-Id: Id6751c90a870885adfc73191c1edb6a72cc74717
Reviewed-on: http://review.couchbase.org/30497
Reviewed-by: abhinav dangeti <abhinav@couchbase.com>
Tested-by: abhinav dangeti <abhinav@couchbase.com>