Support k8s oidc auth

[Ugzuzg]

Description

Fixes #412

Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works.
• I have run linter locally (make lint) and all checks pass.
• I have run tests locally (make test) and all tests pass.
• I have run relevant integration test locally (make integration-xxx for affected packages)
• I have run relevant e2e test locally (make e2e-xxx for disruptors, or cluster related changes)
• Any dependent changes have been merged and published in downstream modules
  

[CLAassistant]

All committers have signed the CLA.

[pablochacin]

Hi @Ugzuzg thanks for submitting this contribution. As I mentioned in the issue you opened (#429) my main concern is about how to test this change. As I can see from the checklist you haven't tested it yourself. I ran the integration tests and haven't noticed any regression, but I can't tell if it will actually solve the issue.

I suppose you have an environment where you can test it. Is there a way you can test it without we releasing a new version?

[Ugzuzg]

I have tested it locally and was able to send disruptions using OIDC auth config. I haven't checked any of the testing checkboxes, because all of them seem to be concerned with running automated tests, and don't apply to the manual test that I have done.

[pablochacin]

LGTM

[pablochacin]

@Ugzuzg the linter is failing due to this error. Can you please add a comment to this line explaining why this is needed? Something like // initialize auth plugins

  Error: pkg/utils/kubernetes.go:9:2: blank-imports: a blank import should be only in a main or test package, or have a comment justifying it (revive)
  	_ "k8s.io/client-go/plugin/pkg/client/auth"
  	^

[Ugzuzg]

@pablochacin, now linter is passing locally.