Resolve "Istio Values Not Passed To Haproxy"

General MR

Summary

istio.enabled and istio.hardened.enabled are not passed through to the haproxy chart. This can be verified in that no AuthService kinds are created for haproxy prior to making these changes.

We'll also enable istio.hardened for the CI runs and pass istio.enabled through to the authservice subchart.

Relevant logs/screenshots

Before fix:

After fix:

Linked Issue

Closes #1963 (closed)

Upgrade Notices

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