helm: Add unhealthyPodEvictionPolicy to PDB

[jcpunk]

Type of change

Select the type of your PR

• Enhancement / new feature

Description

Add support for unhealthyPodEvictionPolicy to helm for the operator.

Checklist

Please go through this checklist and make sure all applicable tasks have been done

• Write tests
• Make sure all tests pass
• Update documentation
• Check RBAC rights for Kubernetes / OpenShift roles
• Try your changes from Pod inside your Kubernetes and OpenShift cluster, not just locally
• Reference relevant issue(s) and close them after merging
• Update CHANGELOG.md
• Supply screenshots for visual changes, such as Grafana dashboards

[jcpunk]

NOTE: this does not resolve #11403

[scholzj]

Thanks for the PR. I left one nit, but LGTM otherwise.

[scholzj]

/azp run helm-acceptance

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[scholzj]

Thanks.

[ppatierno]

Sorry but I need more clarifications about this ...

NOTE: this does not resolve #11403

So what's the main purpose of this PR? You are adding what was proposed in #11403 but just for helm charts.

Also by reading the Kubernetes doc it seems that the default (when no policy is specified) is IfHealthyBudget while this PR related to helm charts uses the AlwaysAllow as default.

[see-quick]

Apart from just one nit, LGTM.

[jcpunk]

Updated to use IfHealthyBudget as the default.

[scholzj]

/azp run helm-acceptance

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[ppatierno]

LGTM. Thanks!