ansible.azure.automation/roles/azure_vgw/defaults/main.yml

---
#vnets:
#  - name:
#    address_prefixes_cidr: []
#    dns_servers:
#    location:
#    purge_address_prefixes:
#    resource_group:
#    state:
#    tags:
#      "env": "prod"
#      "provisioner": "ansible"
...