feat: Add ValidatingWebhookConfiguration to ensure only one CheCluste…

[tolusha]

…r is created

Signed-off-by: Anatolii Bazko abazko@redhat.com

What does this PR do?

Add ValidatingWebhookConfiguration to ensure only one CheCluster is created

Screenshot/screencast of this PR

What issues does this PR fix or reference?

https://issues.redhat.com/browse/CRW-3328

How to test this PR?

1. Deloy Eclipse Che from CatalogSource docker.io/abazko/catalog:crw-3328.
2. Try to create Eclipse Che CR

PR Checklist

As the author of this Pull Request I made sure that:

• The Eclipse Contributor Agreement is valid
• Code produced is complete
• Code builds without errors
• Tests are covering the bugfix
• Custom resource definition file is up to date
• OLM bundles are up to date
• The repository devfile is up to date and works
• Sections What issues does this PR fix or reference and How to test this PR completed
• Relevant user documentation updated
• Relevant contributing documentation updated
• CI/CD changes implemented, documented and communicated

Reviewers

Reviewers, please comment how you tested the PR when approving it.

[openshift-ci]

@tolusha: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/v10-che-operator-update	9308411	link	true	/test v10-che-operator-update

Full PR test history. Your PR dashboard.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. I understand the commands that are listed here.

[nickboldt]

new file created with historical copyright dates? :D

[nickboldt]

If this works, +1. Can't speak to the technical details however.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: nickboldt, tolusha

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