[metrics-team] onionperf deployments

[Silvia [Hiro]]

Hi,

I wanted to give you a heads up that all three onionperf deployments
will be managed via salt (https://saltstack.com/). This will be a great
improvement for managing these VMs.

It is possible that during the setup (end of this week) we might have a
few hours gap in  the measurements. Please let me know if you have any
questions or concerns.

Will update again once everything is finished.

Talk soon,
-hiro