feat(cli): Enhance GKE deployment with editable install and service account options

[syangx39]

close #2766

Who It's For

The --editable flag is primarily for developers who are modifying the core adk-python library code, not just for users who are building agents with the library.

Without the --editable Flag

1.	Make a code change in the adk-python library.
2.	Build a new version of the pip package.
3.	Publish the new package version to a repository like PyPI.
4.	Update your agent's deployment script to install that specific new version.
5.	Deploy the agent and test the change.

With the --editable Flag

1.	Make a code change in the adk-python library.
2.	Run adk deploy gke --editable ....

[gemini-code-assist]

Summary of Changes

Hello @syangx39, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the GKE deployment capabilities of the ADK CLI. It introduces options for developers to easily test local modifications to the ADK library by deploying an editable version, and provides greater control over the security context of deployed agents by allowing the specification of a Kubernetes Service Account. These additions streamline the development workflow and improve deployment flexibility.

Highlights

• Editable ADK Installation for GKE: Users can now deploy ADK agents to GKE using a local, editable version of the ADK library, facilitating development and testing of ADK changes by copying the local source into the Docker image and installing it in editable mode.
• Configurable Kubernetes Service Account: The GKE deployment command now supports specifying a Kubernetes Service Account, allowing for fine-grained control over the deployed agent's permissions within the cluster.

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[adk-bot]

Response from ADK Triaging Agent

Hello @syangx39, thank you for creating this PR!

To help reviewers evaluate your contribution, could you please address the following points from our contribution guidelines:

• Associated Issue: All PRs, other than small documentation or typo fixes, should have an Issue associated. If one doesn't exist, could you please create one and link it here?
• Testing Plan: Please include a testing plan section in your PR description to detail how you've tested these changes.

This information will help reviewers to review your PR more efficiently. Thanks!

[gemini-code-assist]

Code Review

This pull request enhances the GKE deployment CLI by adding support for editable installs of the ADK and allowing the specification of a Kubernetes service account. The changes are well-structured and include corresponding tests. My review identifies a high-severity bug in the Kubernetes YAML generation that could cause deployments to fail, along with a medium-severity maintainability issue in the new editable install logic. I've provided code suggestions to address these points.

[hangfei]

close due to inactivity.