support gemini model as a quickstart set up

[ziyue-101]

What type of PR is this?

/kind feature

Which issue(s) this PR fixes:
Fixes #221

Does this PR introduce a user-facing change?:

NONE

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[k8s-ci-robot]

Hi @ziyue-101. Thanks for your PR.

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[ziyue-101]

/assign @haiyanmeng

[haiyanmeng]

/ok-to-test

[haiyanmeng]

https://github.com/kubernetes-sigs/kube-agentic-networking/tree/main/site-src/guides/external-auth-quickstart needs to be updated too.

[ziyue-101]

https://github.com/kubernetes-sigs/kube-agentic-networking/tree/main/site-src/guides/external-auth-quickstart needs to be updated too.

Done

[haiyanmeng]

@ziyue-101 , I ran make quickstart-gemini and got the error in my agent UI: litellm.InternalServerError: InternalServerError: OpenAIException - Connection error.

[ziyue-101]

@ziyue-101 , I ran make quickstart-gemini and got the error in my agent UI: litellm.InternalServerError: InternalServerError: OpenAIException - Connection error.

This is expected as the adk-agent is using the "main" image which doesn't have the changes in the PR. Run make dev-reload-agent should resolve the issue

[haiyanmeng]

/lgtm

Thanks, @ziyue-101

[haiyanmeng]

@LiorLieberman , PTAL

[LiorLieberman]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: haiyanmeng, LiorLieberman, ziyue-101

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