Add magma-2node spec for 2 node only tests for magma-hidd cluster
Add magma-2node spec for 2 node only tests for magma-hidd cluster

Change-Id: I43e72576a4b56f651c4e8b85842ab5f24addb5c4
Reviewed-on: http://review.couchbase.org/c/perfrunner/+/141706
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Bo-Chun Wang <bb86fd206c9c35341feb9b50e74a74a83e254d63@couchbase.com>

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