Use different KVPORT for cluster_run/prod configuration

KVPORT is 8091 for production configuration and 9000
for cluster_run

Also limit open snapshots per index to be 5.

Change-Id: I67c52139e3c8728d9a6ec25c0a027272d55c29d9
Reviewed-on: http://review.couchbase.org/41566
Reviewed-by: Deepkaran Salooja <deepkaran.couchbase@gmail.com>
Tested-by: Deepkaran Salooja <deepkaran.couchbase@gmail.com>