issue 751747 and issue 846878 setup loading.desktop.network_service for monitoring, and I'm requesting to update alter emails address.

There are 2 issues:
1. Alters used to be sent to network-service-dev@chromium.org, but the most recent one we received was on Jul 9 (I checked manually and there were multiple alters after this date):
  * https://groups.google.com/a/chromium.org/forum/#!topic/network-service-dev/jI9Aeu64v6Q

2. Can we take this chance to update the email address to network-service-sheriffs@chromium.org instead?

Thanks!

(Assigning to dtu@ according to Speed Services Triage calendar. Or please let me know if this isn't the correct procedure)