[BUG] Missing imagePullSecret when converting to Helm with many containers in one Pod

[bl-sarus]

Expected Behavior

When I use the CLI argument --service-group-mode=label, I expect the imagePullSecret property to be added to the generated files chart/templates/*-deployment.yaml or chart/templates/*-statefulset.yaml:

      imagePullSecrets:
        - name: mysecret

Actual Behavior

It is missing, resulting in errors when the Helm install requires pulling images from a private registry.

Steps To Reproduce

Using the attached docker-compose, I get the following outcomes:

• kompose convert --service-group-mode=label -c -f docker-compose.yaml: missing parameter
• kompose convert --service-group-mode=label --controller statefulset -c -f docker-compose.yaml: missing parameter
• kompose convert -c -f docker-compose.yaml: imagePullSecrets is present in deploy files
• kompose convert --controller statefulset -c -f docker-compose.yaml: imagePullSecrets is present in statefulset files

Kompose Version

1.28.0 (c4137012e)

Docker-Compose file

version: '3'
services:
  container-1:
    image: busybox
    command:
      - sh
      - -c
      - 'while true; echo "container-1 running"; sleep 10; done'
    labels:
      kompose.image-pull-secret: mysecret
      kompose.service.group: mygroup
  container-2:
    image: busybox
    command:
      - sh
      - -c
      - 'while true; echo "container-2 running"; sleep 10; done'
    labels:
      kompose.image-pull-secret: mysecret
      kompose.service.group: mygroup

### Anything else?

_No response_

[AhmedGrati]

/assign

[AhmedGrati]

@bl-sarus feel free to review the PR if you have time so we can merge it ASAP.