CLOUDP-314916: e2e OIDC multicluster tests

[anandsyncs]

Summary

This pull request adds new (E2E) tests for multi-cluster OIDC M2M authentication scenarios:

• New test cases covering multi-cluster OIDC M2M group and user authentication workflows.
• Supporting YAML fixtures for configuring and testing OIDC in multi-cluster environments.
• Updates to existing sharded-cluster OIDC test logic to support multi-cluster tests.

Proof of Work

Passing e2e tests.

Checklist

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[anandsyncs]

evergreen patch

[anandsyncs]

evergreen retry

[Copilot]

Pull Request Overview

Adds end-to-end tests and fixtures to validate multi-cluster OIDC machine-to-machine authentication, updates sharded-cluster tests for multi-cluster support, and integrates new test tasks into Evergreen CI.

• New E2E test modules for multi-cluster OIDC user and group workflows
• Supporting YAML fixtures for multi-cluster OIDC scenarios
• Sharded-cluster test updates: multi-cluster logic, service name handling, and increased timeouts
• CI configuration (.evergreen.yml & .evergreen-tasks.yml) updated to run the new tests

Reviewed Changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
docs/mongodbcommunity/users.md	Removed stray blank line
docker/mongodb-kubernetes-tests/tests/multicluster/multi_cluster_oidc_m2m_user.py	Added multi-cluster OIDC M2M user tests
docker/mongodb-kubernetes-tests/tests/multicluster/multi_cluster_oidc_m2m_group.py	Added multi-cluster OIDC M2M group tests
docker/mongodb-kubernetes-tests/tests/multicluster/fixtures/oidc/oidc-user-multi.yaml	New fixture for OIDC M2M user
docker/mongodb-kubernetes-tests/tests/multicluster/fixtures/oidc/mongodb-multi-m2m-user.yaml	New multi-cluster MongoDBMultiCluster fixture for user tests
docker/mongodb-kubernetes-tests/tests/multicluster/fixtures/oidc/mongodb-multi-m2m-group.yaml	New multi-cluster MongoDBMultiCluster fixture for group tests
docker/mongodb-kubernetes-tests/tests/authentication/sharded_cluster_oidc_m2m_user.py	Updated sharded-cluster OIDC user tests for multi-cluster adaptations
docker/mongodb-kubernetes-tests/tests/authentication/sharded_cluster_oidc_m2m_group.py	Updated sharded-cluster OIDC group tests with multi-cluster logic
.evergreen.yml	Added new E2E test tasks to CI task group
.evergreen-tasks.yml	Registered new E2E test tasks

Comments suppressed due to low confidence (1)

docker/mongodb-kubernetes-tests/tests/authentication/sharded_cluster_oidc_m2m_group.py:93

• The skip_if_multi_cluster decorator should be referenced without parentheses (i.e. @skip_if_multi_cluster) to avoid calling the function at import time.

@skip_if_multi_cluster()

[Julien-Ben]

Very cool that you made hybrid tests, working in both single and multi cluster variants !