fix: configure runtime controller with namespace event filter

[tolusha]

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

What does this PR do?

Configure runtime controller with namespace event filter to limit cache.

Screenshot/screencast of this PR

N/A

What issues does this PR fix or reference?

https://issues.redhat.com/browse/CRW-2383

How to test this PR?

1. Create namespaces for i in {1..500}; do oc create namespace test$i; done
2. Deploy Eclipse Che

chectl server:deploy \
     --installer operator \
     --platform openshift \
     --che-operator-image abazko/operator:crw-2383

When operator deployment is created then patch it increase limits
oc patch deployment/che-operator -p '[{"op": "replace", "path": "/spec/template/spec/containers/0/resources/limits/memory", "value":"512Mi"}]' --type=json -n eclipse-che

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.

Release Notes Text

Title: Fix out of memory Che Operator error when the Kubernetes cluster has many namespaces

The latest version of Che Operator crashed with an OOM error in cluster with many namesapeces because it caches more than just the local namespace's objects. The workaround is to increase the memory limit.

[tolusha]

/retest

[sparkoo]

do we really need to increase request memory?

[tolusha]

Agree. We can keep old value.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: AndrienkoAleksandr, mmorhun, sparkoo, tolusha

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[openshift-ci]

New changes are detected. LGTM label has been removed.

[openshift-ci]

@tolusha: The following tests 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/v7-devworkspace-happy-path	3d31a84	link	true	/test v7-devworkspace-happy-path
ci/prow/v7-single-host-nightly-deployment	3d31a84	link	true	/test v7-single-host-nightly-deployment

Full PR test history. Your PR dashboard.

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[themr0c]

Red Hat Jira for CRW release notes: https://issues.redhat.com/browse/CRW-2595