made stale=update_after be default filter
made stale=update_after be default filter

Change-Id: If1af7b767a6a7866358abe0faa9a99f12d312af6
Reviewed-on: http://review.couchbase.org/8492
Tested-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>
Tested-by: Dale Harvey <491ccac09a36ad1e38b698f273b84fd8efc31071@arandomurl.com>
Reviewed-by: Dale Harvey <491ccac09a36ad1e38b698f273b84fd8efc31071@arandomurl.com>

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