Resources Requests for Staging Job

[riqueps]

Is your feature request related to a problem? Please describe.

Currently the Staging job does not have Resources requests section.

For standard k8s clusters (eks managed nodes, gke standard), this allows the pod consume how much resource it wanna, and sometimes it make the node became unresponsive due the lack of resources.

For gke autopilot clusters, when resources requests is not specified, the gke sets the default resource requests, causing the staging job failing due BackoffLimitExceeded

Describe the solution you'd like

I thought in two possible solutions:

1 - Set a hard coded value on the stage job definition: https://github.com/epinio/epinio/blob/main/internal/api/v1/application/stage.go#L524

2 - Expose via helm-chart values, so we can set our own values during the epinio installation and also change it if needed..

stagingJob:
  resources:
    requests:
      cpu: 
      memory: 

[andreas-kupries]

The epinio/helm-charts#428 is not a fix.
However it handles a similar request (annotations, epinio/helm-charts#424)