don't randomize nodes order in stable pool details
don't randomize nodes order in stable pool details

Otherwise pool details long polling doesn't work due to difference
caused by that randomization.

This also removes randomization from build_nodes_info/0 which is only
used from /diag.

Change-Id: If3f51f3fd7de3b4d27580f19c964a87026b6c7d1
Reviewed-on: http://review.couchbase.org/8089
Tested-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>
Reviewed-by: Aliaksey Artamonau <3c875bcfb3adf2a65b2ae7686ca921e6c9433147@gmail.com>

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