feat: add WorkflowTemplate name as label when using workflowTemplateRef. Fixes #12670

[eduardodbr]

Fixes #12670

Motivation

Modifications

Verification

Create a workflow Template

apiVersion: argoproj.io/v1alpha1
kind: WorkflowTemplate
metadata:
  name: workflow-template-submittable
spec:
  entrypoint: whalesay
  templates:
    - name: whalesay
      container:
        image: argoproj/argosay:v2
        command: [/argosay]

Launch a Workflow or a CronWorkflow from the workflowTemplate

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  name: workflow-template-hello-world
spec:
  workflowTemplateRef:
    name: workflow-template-submittable

apiVersion: argoproj.io/v1alpha1
kind: CronWorkflow
metadata:
  name: cron-from-template
spec:
  schedule: "* * * * *"
  startingDeadlineSeconds: 30
  concurrencyPolicy: Replace
  workflowSpec:
    workflowTemplateRef:
      name: workflow-template-submittable

The workflow should have the label:

labels:
    workflows.argoproj.io/workflow-template: workflow-template-submittable

[agilgur5]

Some small comments, but otherwise LGTM. There are also some merge conflicts now as well to resolve

[tooptoop4]

@eduardodbr would you be able to include cronworkflow name too?

[eduardodbr]

@eduardodbr would you be able to include cronworkflow name too?

If a cronworkflow uses a templateRef, the child workflow will have a label with the cron workflow name and other label with the template name