Add kubeconfig flag to validate cluster command

[vvbogdanov87]

Fixes #7559

[k8s-ci-robot]

Hi @vvbogdanov87. Thanks for your PR.

I'm waiting for a kubernetes 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.

I understand the commands that are listed here.

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.

[johngmyers]

Looks like you need to make gen-cli-docs

[vvbogdanov87]

@johngmyers I used bazel to build kops. When I run make gen-cli-docs I get

upup/models/vfs.go:71:15: undefined: Asset
upup/models/vfs.go:82:16: undefined: AssetDir
upup/models/vfs.go:107:16: undefined: AssetDir

Looks like bindata.go is missing under upup/models. Can't find information where to get it. Can I just copy the file from k8s.io/kops? Could you please assist.

[johngmyers]

make upup/models/bindata.go will generate it.

[johngmyers]

I can't reproduce against master your problem. If I remove upup/models/bindata.go, then make gen-cli-docs regenerates it.

[joshbranham]

/ok-to-test

[vvbogdanov87]

/test pull-kops-e2e-kubernetes-aws

[justinsb]

Thanks @vvbogdanov87 - this looks good.

FYI you can always pass the env var KUBECONFIG, but we should support kubeconfig here explicitly!

/approve
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: justinsb, vvbogdanov87

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [justinsb]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment