feat: add support for ephemeral storage requests and limits to casc t…

[knechtionscoding]

…emplates

What does this PR do?

• Fixes Support EphemeralStorage requests and limits in CASC templates #935

If you modified files in the ./charts/jenkins/ directory, please also include the following:

Submitter checklist

Beta Give feedback

1. I bumped the "version" key in ./charts/jenkins/Chart.yml.
2. I added a new changelog entry to ./charts/jenkins/CHANGELOG.md.
3. I followed the technical requirements.

Special notes for your reviewer

[knechtionscoding]

hknecht:helm-charts-jenkins/ (main✗) $ helm unittest --helm3 --strict -f 'unittests/*.yaml' charts/jenkins                                                                                              

### Chart [ jenkins ] charts/jenkins

2023/10/18 21:21:03 warning: destination for jenkins.controller.initScripts is a table. Ignoring non-table value ([])
 PASS  ConfigMap        charts/jenkins/unittests/config-init-scripts-test.yaml
 PASS  ConfigMap        charts/jenkins/unittests/config-test.yaml
 PASS  PersistentVolumeClaim    charts/jenkins/unittests/home-pvc-test.yaml
2023/10/18 21:21:03 warning: destination for jenkins.controller.projectNamingStrategy is a table. Ignoring non-table value (standard)
2023/10/18 21:21:03 warning: cannot overwrite table with non table for jenkins.controller.JCasC.security.apiToken (map[creationOfLegacyTokenEnabled:false tokenGenerationOnCreationEnabled:false usageStatisticsEnabled:true])
 PASS  Configuration as Code    charts/jenkins/unittests/jcasc-config-test.yaml
 PASS  Jenkins Agent Service    charts/jenkins/unittests/jenkins-agent-svc-test.yaml
 PASS  Jenkins Backup Cronjob   charts/jenkins/unittests/jenkins-backup-cronjob-test.yaml
 PASS  Controller Prometheus PrometheusRule     charts/jenkins/unittests/jenkins-controller-alerting-rules-test.yaml
 PASS  Controller Primary Ingress       charts/jenkins/unittests/jenkins-controller-ingress-1.19-test.yaml
 PASS  Controller Ingress - DRY Support charts/jenkins/unittests/jenkins-controller-ingress-DRY-test.yaml
 PASS  Controller Primary Ingress       charts/jenkins/unittests/jenkins-controller-ingress-test.yaml
 PASS  Network Policy   charts/jenkins/unittests/jenkins-controller-networkpolicy-test.yaml
 PASS  Controller Pod Disruption Budget charts/jenkins/unittests/jenkins-controller-pdb-1.21-test.yaml
 PASS  Controller Pod Disruption Budget charts/jenkins/unittests/jenkins-controller-pdb-test.yaml
 PASS  Controller Secondary Ingress     charts/jenkins/unittests/jenkins-controller-secondary-ingress-1.19-test.yaml
 PASS  Controller Secondary Ingress     charts/jenkins/unittests/jenkins-controller-secondary-ingress-test.yaml
 PASS  Controller Prometheus ServiceMonitor     charts/jenkins/unittests/jenkins-controller-servicemonitor_test.yaml
 PASS  Jenkins Controller       charts/jenkins/unittests/jenkins-controller-statefulset-test.yaml
 PASS  Jenkins Controller       charts/jenkins/unittests/jenkins-controller-svc-test.yaml
 PASS  Role Based Access Control        charts/jenkins/unittests/rbac-test.yaml
 PASS  Controller Admin Additional Secrets      charts/jenkins/unittests/secret-additional-test.yaml
 PASS  Controller Secret Claims charts/jenkins/unittests/secret-claims-test.yaml
 PASS  Controller Additional Existing Secrets   charts/jenkins/unittests/secret-existing-test.yaml
 PASS  Controller Admin Credentials     charts/jenkins/unittests/secret-test.yaml
 PASS  Controller Service Account       charts/jenkins/unittests/service-account-agent-test.yaml
 PASS  Controller Service Account       charts/jenkins/unittests/service-account-test.yaml

Charts:      1 passed, 1 total
Test Suites: 25 passed, 25 total
Tests:       154 passed, 154 total
Snapshot:    1 passed, 1 total
Time:        1.00814175s

It passes linting locally. I'm not sure why the linting for 1.26.4 is failing. It appears to be failing on the download, so I think it's just a flake?

[timja]

I think these should be commented out by default, so that people can see that they can set it but it doesn't set a value by default

[timja]

Thanks!