multi-cluster workflow: add example of multi cluster test workflow

[harshanarayana]

Closes #138

1. Add an example of how to perform multi cluster test.
2. Minor adjustment to the envfuncs to be able to extract the kind cluster from ctx

Closes #130 as well

[k8s-ci-robot]

Hi @harshanarayana. 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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[harshanarayana]

@ShwethaKumbla @vladimirvivien PTAL when time permits. Thanks in advance

[harshanarayana]

/assign @shwethakumbla @vladimirvivien

[ShwethaKumbla]

/ok-to-test

[harshanarayana]

/retest

[harshanarayana]

/test pull-e2e-framework-test

[harshanarayana]

@vladimirvivien @ShwethaKumbla Suddenly a few of the tests have become flaky and timing out! Wonder what is causing it ? Any idea / suggestion on where to look for ?

[vladimirvivien]

@harshanarayana did the flakiness go away?

[harshanarayana]

@harshanarayana did the flakiness go away?

@vladimirvivien Seems like it did! Not sure why it happened or how it disappeared. 🪄

[vladimirvivien]

@harshanarayana lol. It's flaky!

Ok will take a look.

[harshanarayana]

@vladimirvivien just a heads up on this review if time permits. Thanks

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: harshanarayana, vladimirvivien

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[harshanarayana]

LGTM

@vladimirvivien Sorry, I think this will need another review since I moved it out of DRAFT and forgot to do that before

[harshanarayana]

/test pull-e2e-framework-test

[vladimirvivien]

/LGTM