test: add e2e framework and test runner

[kaffie-1517]

Summary

This PR adds the Ginkgo e2e test framework, runner scripts, and Go module dependencies needed to write and execute end-to-end tests for volcano-global. It provides shared multi-cluster clients, CRUD + wait helpers for every volcano-global resource type, and a make e2e-test entrypoint.

Changes in this PR

• test/e2e/framework/clients.go : shared Clients struct holding Karmada, host, member Kube + Volcano clientsets
• test/e2e/framework/framework.go : BeforeSuite init, namespace helpers, polling constants, CLI flags for kubeconfig paths
• test/e2e/framework/vcjob.go : Create / Delete / Get / WaitForStatus helpers for VCJob
• test/e2e/framework/queue.go : Create / Delete / Get / WaitForOpen helpers for Queue
• test/e2e/framework/propagationpolicy.go : Create / Delete helpers for PropagationPolicy
• test/e2e/framework/resourcebinding.go : WaitForSuspended / WaitForUnsuspended / WaitForExists helpers for ResourceBinding
• test/e2e/framework/hyperjob.go : Create / Delete / Get / WaitForChildJobs helpers for HyperJob
• test/e2e/e2e_suite_test.go : Ginkgo bootstrap that registers the framework and runs all suites
• hack/e2e.sh : top-level entrypoint with SKIP_SETUP support (calls setup-e2e-env.sh then run-e2e.sh)
• hack/run-e2e.sh : installs ginkgo, ensures PATH, overrides GOOS/CGO_ENABLED for local runs, runs tests with --race --fail-fast -p, collects Kind + pod logs
• go.mod / go.sum : add ginkgo/v2, gomega, and transitive deps
• Makefile : add e2e-test target

Follow-up changes

• Test cases for all 4 scenarios
  • Add suites for: resource quota & priority, cross-cluster VCJob scheduling, data-dependency aware scheduling, and HyperJob scheduling
• CI workflow and documentation
  • Add GitHub Actions workflow to run e2e in CI + docs for running/extending tests

Test plan

• Run the e2e tests locally against an existing Karmada + Volcano environment:

  SKIP_SETUP=true make e2e-test

• Verify Ginkgo discovers and executes suites:

  cd hack && ./run-e2e.sh

• Confirm all framework helpers compile:

  go build ./test/e2e/...

Liked issue:

• [LFX term 1 project] [Feature] Add Github CI workflow for e2e tests #35

[volcano-sh-bot]

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[gemini-code-assist]

Code Review

This pull request introduces a comprehensive E2E testing suite for Volcano-Global, including deployment automation, test execution scripts, and a multi-cluster testing framework. Feedback focuses on improving the robustness and portability of the environment by pinning tool versions and disabling CGO, while also suggesting the parameterization of hardcoded cluster names and dependency versions to enhance framework flexibility.

[gemini-code-assist]

Installing ginkgo with @latest can lead to non-deterministic test environments if a new version is released with breaking changes. It is better to pin the version to match the one defined in go.mod.

Suggested change

	GO111MODULE=on go install github.com/onsi/ginkgo/v2/ginkgo@latest
	GO111MODULE=on go install github.com/onsi/ginkgo/v2/ginkgo@v2.28.1

[gemini-code-assist]

Setting CGO_ENABLED=1 might cause build failures in environments without a C compiler (like some CI runners). Since E2E tests typically only perform API calls, CGO is likely unnecessary. Consider setting it to 0 for better portability.

Suggested change

	GOOS=$(go env GOHOSTOS) GOARCH=$(go env GOHOSTARCH) CGO_ENABLED=1 \
	GOOS=$(go env GOHOSTOS) GOARCH=$(go env GOHOSTARCH) CGO_ENABLED=0 \

[gemini-code-assist]

The default VOLCANO_VERSION is set to release-1.10, but the project appears to be using a much newer version (v1.14.0-alpha.0 according to go.mod). Using an outdated version for CRDs might lead to compatibility issues.

Suggested change

	VOLCANO_VERSION=${VOLCANO_VERSION:-"release-1.10"}
	VOLCANO_VERSION=${VOLCANO_VERSION:-"master"}

[JesseStutler]

Thanks @kaffie-1517, but I didn't see any github workflow has been added in this PR, did you miss it? With github workflow, we can know that whether a PR will have bugs or have influence before the merge, and it's better for me to judge your PR, no need to build the clusters from the scratch