ROX-20268 Support running E2E tests on GKE

[mclasmeier]

Description

This PR integrates support for deploying the E2E test suite to GKE (via infra GKE, for example). The major puzzle piece for this was implementing a mechanism for propagating tenant image pull secrets into tenant namespaces for pulling
images from a private Quay repository.

Also: Version bump golangci-linter, because the old version was throwing
errors.

Checklist (Definition of Done)

• Unit and integration tests added
• Added test description under Test manual
• Documentation added if necessary (i.e. changes to dev setup, test execution, ...)
• CI and all relevant tests are passing
• Add the ticket number to the PR title if available, i.e. ROX-12345: ...
• Discussed security and business related topics privately. Will move any security and business related topics that arise to private communication channel.
• Add secret to app-interface Vault or Secrets Manager if necessary
• RDS changes were e2e tested manually
• Check AWS limits are reasonable for changes provisioning new resources

Test manual

TODO: Add manual testing efforts

# To run tests locally run:
make db/teardown db/setup db/migrate
make ocm/setup OCM_OFFLINE_TOKEN=<ocm-offline-token> OCM_ENV=development
make verify lint binary test test/integration

[mclasmeier]

I suggest to merge this only after the GitOps feature is rolled out (@SimonBaeumer).
Just to be on the safe side when it comes to CI related changes.

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kovayur, mclasmeier, SimonBaeumer

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