Some integration tests use public URLs to access files. This is problematic for a few reasons:

• Adds a dependency on external service, making tests not hermetic. This has broken us before
• Does not work in airgap env
• Does not work for ipv6 testing.
  • In our current setup we have no external connectivity for ipv6 clusters
  • Even if we did, github does not support ipv6 it seems

Currently I know we use this for the JWKS and attributegen, but there may be others.

Proposed solution: Deploy a trivial file server that serves plaintext + HTTPS into istio-system for tests that require it