Update provider name in helm chart for GKE to be not case sensitive

[rahulgurnani]

What type of PR is this?
/kind gep

What this PR does / why we need it:
While setting provider name as gke for the helm chart, make the provider name not case sensitive.

Which issue(s) this PR fixes:

Addresses #1482

Does this PR introduce a user-facing change?:

Yes.

[k8s-ci-robot]

@rahulgurnani: The label(s) kind/gep cannot be applied, because the repository doesn't have them.

In response to this:

What type of PR is this?
/kind gep

What this PR does / why we need it:
While setting provider name as "gke" for the helm chart, make the provider name not case sensitive.

Which issue(s) this PR fixes:

Fixes #1482

Does this PR introduce a user-facing change?:

Yes.

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 kubernetes-sigs/prow repository.

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[k8s-ci-robot]

Hi @rahulgurnani. Thanks for your PR.

I'm waiting for a kubernetes-sigs 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.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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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 kubernetes-sigs/prow repository.

[nirrozenbaum]

/ok-to-test

[nirrozenbaum]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nirrozenbaum, rahulgurnani

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• OWNERS [nirrozenbaum]

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