fix(grafana-dashboard): remove hardcoded namespace references

[aslafy-z]

What this PR does / why we need it:

Remove uat hardcoded reference in some panels of the grafana dashboard.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• CVE Report (Scanner found CVE and adding report)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation only

Which issue/s this PR fixes

How Has This Been Tested?

Remove the exported_namespace="uat" to the panels.
Check the panels are shown correctly.

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have added unit and/or e2e tests to cover my changes.
• All new and existing tests passed.
• Added Release Notes.

Does my pull request need a release note?

Any user-visible or operator-visible change qualifies for a release note. This could be a:

• CLI change
• API change
• UI change
• configuration schema change
• behavioral change
• change in non-functional attributes such as efficiency or availability, availability of a new platform
• a warning about a deprecation
• fix of a previous Known Issue
• fix of a vulnerability (CVE)

No release notes are required for changes to the following:

• Tests
• Build infrastructure
• Fixes for unreleased bugs

For more tips on writing good release notes, check out the Release Notes Handbook

Remove hardcoded namespace references in the Grafana dashboard.

[k8s-ci-robot]

@aslafy-z: This issue is currently awaiting triage.

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[k8s-ci-robot]

Hi @aslafy-z. Thanks for your PR.

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[rikatz]

/ok-to-test
/lgtm
/approve
Thanks

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aslafy-z, rikatz

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[fschlich]

Actually, I don't think one wants to entirely remove the Ingress namespace selector, as you did here. I think one would want to make it a variable, and use it in other panels as well. That is what #9092 does.