Attempt native imagebuilder image

REMOVED/packer/azure/windows-2019.json

@@ -0,0 +1,14 @@
+{
+  "additional_registry_images": "true",
+  "additional_registry_images_list": "docker.io/sigwindowstools/flannel:v0.13.0-nanoserver,docker.io/sigwindowstools/kube-proxy:{{user `kubernetes_semver`}}-nanoserver",
+  "build_name": "windows-2019",
+  "distribution": "windows",
+  "distribution_version": "2019",
+  "image_offer": "WindowsServer",
+  "image_publisher": "MicrosoftWindowsServer",
+  "image_sku": "2019-Datacenter-Core-smalldisk",
+  "image_version": "latest",
+  "load_additional_components": "true",
+  "vm_size": "Standard_D4s_v3",
+  "windows_updates_kbs": ""
+}