Runbook updates for using a private network for CI traffic
As discussed in today's standup https://docs.google.com/document/d/1TvhqaMA2mNhpmIgf6G06NVYvhfSQjJUNaOEppfSDZXw/edit#heading=h.u1fg33fn8vjf (internal) we should take a look at what runbook updates will be necessary to communicate this configuration change to other SREs.
Some things discussed on the call:
- We might want to put it under the runner networking section, and link to it from HAProxy
- The HAProxy runbook might need to be updated as well since the configuration is changed slightly