Port server configuration is per node.
Port server configuration is per node.

This is needed since paths and arguments can be different on cluster nodes.

Change-Id: I8a24e2998eb081d77f234f1fea0fe5fc53f21249
Reviewed-on: http://review.couchbase.org/8551
Tested-by: Aliaksey Artamonau <3c875bcfb3adf2a65b2ae7686ca921e6c9433147@gmail.com>
Tested-by: Dale Harvey <491ccac09a36ad1e38b698f273b84fd8efc31071@arandomurl.com>
Reviewed-by: Dale Harvey <491ccac09a36ad1e38b698f273b84fd8efc31071@arandomurl.com>

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