[elasticsearch][kibana] Add flexible ingress

[kevinsmithwrs]

• Chart version not bumped (the versions are all bumped and released at the same time)
• README.md updated with any new values or changes
• Updated template tests in ${CHART}/tests/*.py
• Updated integration tests in ${CHART}/examples/*/test/goss.yaml

Fix #979

[elasticmachine]

Since this is a community submitted pull request, a Jenkins build has not been kicked off automatically. Can an Elastic organization member please verify the contents of this patch and then kick off a build manually?

[cla-checker-service]

💚 CLA has been signed

[jmlrt]

cla/check

[jmlrt]

jenkins test this please

[jmlrt]

jenkins test this please

[jmlrt]

LGTM but we need to keep backward compatibility => added in ae0d168

[jmlrt]

jenkins test this please

[yurrriq]

LGTM but we need to keep backward compatibility

With no changes to our values, this change broke our Helm release. Is it the case that this chart does not follow semantic versioning? I would have expected a major version bump for this breaking change.

I would also expect the breaking change to be listed here: https://github.com/elastic/helm-charts/blob/master/BREAKING_CHANGES.md#7111

[jmlrt]

Hi @yurrriq,
This change has been updated to ensure backward compatibility.
It shouldn't have any impacts on existing release, that's why we removed the breaking change label.
If you had some issue with this change and your existing values, it's a bug.
Can you open a new ticket and provides all details required so we can investigate?

[yurrriq]

This change has been updated to ensure backward compatibility.

Unfortunately, that is not the case. The breaking change is here, where the schema for ingress.hosts was changed dramatically.

[yurrriq]

I have created #1090