minor fix to override sdk version
minor fix to override sdk version

Change-Id: I9494baaefccca6206ad223e491278ea76ca35831
Reviewed-on: http://review.couchbase.org/114636
Reviewed-by: Korrigan Clark <11cf3ebdc6cba78053c91b2fd94cb21b47d0d02e@couchbase.com>
Tested-by: Korrigan Clark <11cf3ebdc6cba78053c91b2fd94cb21b47d0d02e@couchbase.com>

couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner