Include istio-system namespace in the deployment yaml of istio module

[pbochynski]

Description

Add istio-system to the deployment YAML file (one of release artifacts) in order to have it created and managed by the Kyma Lifecycle Manager.

Reasons
We need consistent labeling of system resources for all Kyma modules. See: kyma-project/community#922

DoD:

• Provide unit and integration tests.
• Provide documentation.
• Verify if the solution works for both open-source Kyma and SAP BTP, Kyma runtime.
• If you changed the resource limits, explain why it was needed.
• If the default configuration of Istio Operator has been changed, you performed a manual upgrade test to verify that the change can be rolled out correctly.
• Verify that your contributions don't decrease code coverage. If they do, explain why this is the case.
• Add release notes.

Attachments

[strekm]

We need to check if there will be no conflict between KLM and Istio module.

[videlov]

We need to check if there will be no conflict between KLM and Istio module.

tested both scenarios without any issues, having new module manifest which includes istio-system namespace definition:

• creating a new SKR
• upgrading old SKR

module CR on kcp in both cases in Ready state. Double checked few error messages from KLM operator with @ruanxin. All should be good. No issues.

for the tests, I did create a Istio module dev release for it, version 1.9.1