Cronjob controller example

[vladimirvivien]

What type of PR is this?

/kind documentation

What this PR does / why we need it:

This PR shows how to use the e2e-framework to test Kubernetes controllers using the CronJob controller (from Kubebuilder) as an example.

[vladimirvivien]

/retest

[vladimirvivien]

@harshanarayana @cpanato @ShwethaKumbla

PTAL

[vladimirvivien]

@cpanato @ShwethaKumbla @heylongdacoder PTAL

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/kubernetes-sigs/e2e-framework/blob/main/OWNERS)~~ [vladimirvivien] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[vladimirvivien]

/retest

[cpanato]

@vladimirvivien try to rebase your PR

[vladimirvivien]

@cpanato rebased. PTAL.

[cpanato]

/lgtm