Add ubuntu-focal-arm64 images and labels

Change-Id: I089ed7fadc2c69b7f650c84c525c75d3cd0fcd62

zuul.d/images.yaml

@@ -62,6 +62,10 @@
     name: ubuntu-focal
     type: zuul
 
+- image:
+    name: ubuntu-focal-arm64
+    type: zuul
+
 - image:
     name: ubuntu-jammy
     type: zuul

zuul.d/labels.yaml

@@ -456,6 +456,16 @@
     image: ubuntu-focal
     flavor: 32GB
 
+- label:
+    name: ubuntu-focal-arm64-8GB
+    image: ubuntu-focal-arm64
+    flavor: 8GB
+
+- label:
+    name: ubuntu-focal-arm64-16GB
+    image: ubuntu-focal-arm64
+    flavor: 16GB
+
 - label:
     name: ubuntu-focal-nested-virt-8GB
     image: ubuntu-focal

zuul.d/nodepool-labels.yaml

@@ -86,6 +86,11 @@
     image: ubuntu-focal
     flavor: 8GB
 
+- label:
+    name: ubuntu-focal-arm64
+    image: ubuntu-focal-arm64
+    flavor: 8GB
+
 - label:
     name: nested-virt-ubuntu-focal
     image: ubuntu-focal