CBQE-1051: elastic search systest suite

Change-Id: Ib946df22e6360be71027d3b66ff62f20d550ac1d
Reviewed-on: http://review.couchbase.org/24674
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Tommie McAfee <tommie@couchbase.com>