[stable/2023.2] feat: build arm64 images for computes (#1423)

This is an automated cherry-pick of #1350
/assign mnaser
diff --git a/zuul.d/container-images/ovn.yaml b/zuul.d/container-images/ovn.yaml
index 0c31387..e7735cb 100644
--- a/zuul.d/container-images/ovn.yaml
+++ b/zuul.d/container-images/ovn.yaml
@@ -49,6 +49,7 @@
           repository: registry.atmosphere.dev/library/ovn-host
           arch:
             - linux/amd64
+            - linux/arm64
           build_args:
             - "RELEASE={{ zuul.branch | replace('stable/', '') }}"
             - OVN_COMPONENT=host