E2E: add multi-home networking to test infrastructure #16218
Merged
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Add an Elastic Network Interface (ENI) to each Linux host, on a secondary subnet we have provisioned in each AZ. Revise security groups as follows:
This changeset doesn't include any Nomad configuration changes needed to take advantage of the extra network interface. I'll include those with testing for PR #16217. (And I've verified the cluster comes up normally with this change.)