Cannot disable datasource in worker when datasource PVC is not available

[yehiyam]

HKube micro-service
worker, task-executor, helm

Describe the bug
If the datasource PVC is not available, (e.g. there is no RWX PVC support in the cluster) workers fail to start due to missing PVC.
The datasources PVC is always added to the worker template

Expected behavior
Add options to helm to disable datasources. This should disable the datasources-service, gitea, minio, PVC creation
The task executor should only add the PVC if datasources are enabled