Add Jaeger tracing integration to inferencepool chart

[cyclinder]

What type of PR is this?

/kind feature

What this PR does / why we need it:

This PR adds Jaeger as an opt-in default trace backend for GAIE, making it easier for users to understand how inference requests are processed and routed.

Which issue(s) this PR fixes:

Fixes #1705

Does this PR introduce a user-facing change?:

[helm] Add Jaeger UI screenshot showing GAIE traces

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: cyclinder
Once this PR has been reviewed and has the lgtm label, please assign danehans for approval. For more information see the Code Review Process.

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[Frapschen]

Maybe we should use Jaeger v2

[cyclinder]

Fixed

[cyclinder]

I need to fix these failing tests.

[k8s-ci-robot]

@cyclinder: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-gateway-api-inference-extension-verify-main	5396689	link	true	/test pull-gateway-api-inference-extension-verify-main
pull-gateway-api-inference-extension-test-unit-main	5396689	link	true	/test pull-gateway-api-inference-extension-test-unit-main

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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