WIP POC To solve flake - fix: ci - install kustomize in the CI

[camilamacedo86]

Description of the change:
Install kustomize in the CI

Motivation for the change:

Fix: https://travis-ci.org/github/operator-framework/operator-sdk/jobs/737695550#L327-L337

Checklist

If the pull request includes user-facing changes, extra documentation is required:

• Add a new changelog fragment in changelog/fragments (see changelog/fragments/00-template.yaml)
• Add or update relevant sections of the docs website in website/content/en/docs

[camilamacedo86]

/hold

[joelanford]

I very much disagree with this change.

Any test prerequisites or setup should be done in make targets. This type of thing makes our CI environment different from our local test environment, which was one of the main motivations for #4023.

Moreover, by installing kustomize outside of the project makefile we are no longer exercising a component of our e2e test, which is to ensure that the make kustomize target works.

[estroz]

I don’t see what the problem is. The only place kustomize is needed in the sanity tests is in the samples generator, which scaffolds a project. When any make command is run that requires kustomize, it will be installed by make kustomize. If that is not happening, there is a bug in a plugin somewhere.

[joelanford]

@estroz That's exactly what happens.

It seems like there's a flake with it though: https://travis-ci.org/github/operator-framework/operator-sdk/jobs/737438343#L538

Not really clear what's causing that failure, but my guess would be the go get command.

[camilamacedo86]

Closing this one. I do not think that it will solve the problem anyway.
Travis has been not nice from yesterday to today.