Add user-defined labels option to ingress

[wigust]

Description

Similar to #390 allow to add labels to Ingress in charts/opensearch

Issues Resolved

Labels could be used in kube-prometheus-stack monitoring.coreos.com/v1 Probe objects as a selector.

Check List

• [x] Commits are signed per the DCO using --signoff

For any changes to files within Helm chart directories:

• [x] Helm chart version bumped
• [x] Helm chart CHANGELOG.md updated to reflect change

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license. For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[prudhvigodithi]

Thanks LGTM, final two things left is please update the chart README section adding ingress. ingressLabels and the changelog [Unreleased] section, here is the sample merged PR https://github.com/opensearch-project/helm-charts/pull/506/files.

[prudhvigodithi]

I will take care of this suggestions from my above comment, we can merge this PR.

[prudhvigodithi]

Hey @wigust in order to fast-track I have pushed a commit with updated chart version and a conflict fix. Adding @TheAlgo