added node-specific stats to hooks.js
added node-specific stats to hooks.js

Change-Id: I18f57f7bb8d55d5d6ec6ef7213daeb8d6c1a681e
Reviewed-on: http://review.membase.org/4510
Reviewed-by: Aaron Miller <41fcc51335f382e0855796cc35dd33f571f2d8f7@ninjawhale.com>
Tested-by: Aaron Miller <41fcc51335f382e0855796cc35dd33f571f2d8f7@ninjawhale.com>
Reviewed-by: Sean Lynch <e07ca8b5c22e6f6609daf94a8bc7d7ee0eb3f49b@gmail.com>

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