Addition of TLSRoute with Terminate mode conformance tests

[mlavacca]

What would you like to be added:

Conformance tests for TLSRoutes with TLS terminate mode.

Why this is needed:

GEP-2907 update listed the TLS modes supported by each protocol. Since we need to support both Passthrough and Terminate TLS mode for TLSRoute, we want to add conformance tests for both of them. #1579 already tracks conformance tests for TLSRoutes with Passthrough, while this issue aims at tracking conformance tests for TLSRoutes with Terminate mode.

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/lifecycle stale

[k8s-triage-robot]

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues.

This bot triages un-triaged issues according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

• Mark this issue as fresh with /remove-lifecycle rotten
• Close this issue with /close
• Offer to help out with Issue Triage

Please send feedback to sig-contributor-experience at kubernetes/community.

/lifecycle rotten

[mlavacca]

/remove-lifecycle rotten

/assign