[network-health] merging with metrics-team@ mailing list

Hi people!

We just moved everyone that was subscribed to metrics-team@ mailing list to this network-health@ one. Welcome everybody! This new team is maintaining all the metrics software that we run and is responsible of the state of the network. You can read more about it at http://eweiibe6tdjsdprb4px6rqrzzcsi22m4koia44kc5pcjr7nec2rlxyad.onion/tpo/ne...

cheers, gaba