fix gke auth for tests

[lizhuqi]

What this PR does / why we need it:
no Auth Provider found for name "gcp" when running e2e test in GKE cluster. The fix is importing _ "k8s.io/client-go/plugin/pkg/client/auth/gcp" in the test/e2e/dynamic_provisioning_test.go. Used the go mod tidy and go mod vendor to update go.mod and vendor files.

Special notes for your reviewer:

Release note:

none

[k8s-ci-robot]

Hi @lizhuqi. Thanks for your PR.

I'm waiting for a kubernetes-csi member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[coveralls]

Pull Request Test Coverage Report for Build 912675816

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 86.805%

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Totals
Change from base Build 904767439:	0.0%
Covered Lines:	796
Relevant Lines:	917

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💛 - Coveralls

[andyzhangx]

/ok-to-test

[andyzhangx]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: andyzhangx, lizhuqi

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• OWNERS [andyzhangx]

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