Allow overwrite “accessModes” to support AWS ebs for k8s volumes

[devopsmash]

Summary

• Allow overwrite “accessModes” to support AWS ebs for k8s volumes
• Now if you choose persistence, it will attach the new PVC directly to the deployment

Tests

I've added additional custom values file (custom-values.yaml) with the following content:

persistence:
  enabled: true
  dynamicProvisioning: true
  storageClassName: gp3
  size: 10Gi
  accessModes:
  - ReadWriteOnce

Test commands

• helm template -f .\values.yaml -f .\custom-values.yaml .
• helm -n mageai upgrade --install mageai -f .\values.yaml -f .\custom-values.yaml .

Notes:

• I believe that we can omit the .Values.volumes from the helm chart

closes #70

Inspired from the Jenkins helm chart

• https://github.com/jenkinsci/helm-charts/blob/main/charts/jenkins/values.yaml#L1241
• https://github.com/jenkinsci/helm-charts/blob/main/charts/jenkins/templates/jenkins-controller-statefulset.yaml#L149
• https://github.com/jenkinsci/helm-charts/blob/7e5c124576d9e0828915bdb904fd834a94c216af/charts/jenkins/templates/jenkins-controller-statefulset.yaml#L405

[devopsmash]

Hi @wangxiaoyou1993 , please let me now if additional info is needed or if something is unclear.

[wangxiaoyou1993]

Will review the PR today