added enginetests folder for ep-engine tests
Change-Id: Ic8bc610d3f3be128ece846456d64b5285f4aa8b1
Reviewed-on: http://review.couchbase.org/38519
Reviewed-by: Venu Uppalapati <venumahesh@gmail.com>
Tested-by: Venu Uppalapati <venumahesh@gmail.com>