LOG-9171: Add support for gcp workload identity federation v0.54

[cahartma]

Core changes (src/gcp.rs)

• Replace goauth + smpl_jwt libraries with official google-cloud-auth v1.6
• Implement scopes for External Account credentials (Workload Identity Federation)
• Add token refresh logic with 1-hour expiry
• Maintain backward compatibility with all existing authentication methods

cc @vparfonov @Clee2691

https://redhat.atlassian.net/browse/LOG-9171

[openshift-ci-robot]

@cahartma: This pull request references LOG-9171 which is a valid jira issue.

Details

In response to this:

Core changes (src/gcp.rs)

• Replace goauth + smpl_jwt libraries with official google-cloud-auth v1.6
• Implement scopes for External Account credentials (Workload Identity Federation)
• Add token refresh logic with 1-hour expiry
• Maintain backward compatibility with all existing authentication methods

cc @vparfonov @Clee2691

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: cahartma
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[openshift-ci-robot]

@cahartma: This pull request references LOG-9171 which is a valid jira issue.

Details

In response to this:

Core changes (src/gcp.rs)

• Replace goauth + smpl_jwt libraries with official google-cloud-auth v1.6
• Implement scopes for External Account credentials (Workload Identity Federation)
• Add token refresh logic with 1-hour expiry
• Maintain backward compatibility with all existing authentication methods

cc @vparfonov @Clee2691

https://redhat.atlassian.net/browse/LOG-9171

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[openshift-ci]

@cahartma: 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
ci/prow/cargo-fmt-check	cdaaa5d	link	false	/test cargo-fmt-check
ci/prow/cluster-logging-operator-e2e	cdaaa5d	link	true	/test cluster-logging-operator-e2e
ci/prow/unit	cdaaa5d	link	true	/test unit

Full PR test history. Your PR dashboard.

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