use cluster configuration prefix in gen_cluster_scripts.rb
use cluster configuration prefix in gen_cluster_scripts.rb

Change-Id: Ic07e77d83fd5c567e3b055060c43b9608ab7b101
Reviewed-on: https://review.northscale.com:8443/1184
Reviewed-by: Steve Yen <ef850f73f7832052d3c6d9b5ddd3a1716d9a57f1@gmail.com>
Tested-by: Dustin Sallings <1c08efb9b3965701be9d700d9a6f481f1ffec3ea@spy.net>

t3rm1n4l/ns_server,ceejatec/ns_server,membase/ns_server,nimishzynga/ns_server,vzasade/ns_server,ingenthr/ns_server,t3rm1n4l/ns_server,ceejatec/ns_server,ingenthr/ns_server,vzasade/ns_server,membase/ns_server,ceejatec/ns_server,t3rm1n4l/ns_server,nimishzynga/ns_server,mschoch/ns_server,membase/ns_server,vzasade/ns_server,pavel-blagodov/ns_server,nimishzynga/ns_server,nimishzynga/ns_server,membase/ns_server,ingenthr/ns_server,mschoch/ns_server,mschoch/ns_server,mschoch/ns_server,ceejatec/ns_server,daverigby/ns_server,ceejatec/ns_server,pavel-blagodov/ns_server,membase/ns_server,mschoch/ns_server,daverigby/ns_server,t3rm1n4l/ns_server,pavel-blagodov/ns_server,ingenthr/ns_server,pavel-blagodov/ns_server,mschoch/ns_server,ceejatec/ns_server,nimishzynga/ns_server,daverigby/ns_server,nimishzynga/ns_server,t3rm1n4l/ns_server,membase/ns_server,daverigby/ns_server,daverigby/ns_server,vzasade/ns_server