Modifying cluster-kubeflow.yaml file to update GCP GKE version for Kubeflow v1.0

[virgoaugustine]

Which issue is resolved by this Pull Request:
Resolves #1519

Description of your changes:
Changed the "cluster-version" from 1.14 to 1.15 on the v1.0-branch.

Checklist:

• Unit tests have been rebuilt:
  1. cd manifests/tests
  2. make generate-changed-only
  3. make test

[k8s-ci-robot]

Hi @virgoaugustine. Thanks for your PR.

I'm waiting for a kubeflow 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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[kubeflow-bot]

This change is 

[virgoaugustine]

cc @jlewi

[virgoaugustine]

@krishnadurai @zhenghuiwang

[jlewi]

/lgtm
/approve
Thanks for the fix.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jlewi

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• OWNERS [jlewi]

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[k8s-ci-robot]

@virgoaugustine: The following test failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
kubeflow-manifests-presubmit	daf491d	link	/test kubeflow-manifests-presubmit

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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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/test-infra repository. I understand the commands that are listed here.

[virgoaugustine]

/retest

[k8s-ci-robot]

@virgoaugustine: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

Details

In response to this:

/retest

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/test-infra repository.

[jlewi]

Closing this PR. @virgoaugustine deleted the DM configs in #1538 so I don't think this PR is relevant anymore.