[FEATURE_REQUEST] Need check for priorityClassName value

[marcmognol]

Description of the problem/feature request
I would like to ensure that my Deployment and Daemonset has priorityClassName value defined.

Description of the existing behavior vs. expected behavior
Current behavior: no error when a Deployment or Daemonset has no priorityClassName value.
Expected behavior: kube-linter should throw an error when priorityClassName is not defined.

Additional context
If this check is not requested enough by the community, is it possible to have a template which let me create a customCheck by myself.

The template could be take two parameters:

• propertyName : string (ex priorityClassName)
• possibleValues: array of string (possible values for priorityClassName )

Thanks
Marc