REVERT: image-build debug

Author: m-bull

.github/extra_vars/arcus.yml

@@ -33,3 +33,5 @@ image_build_attach_floating_ip: true
 image_build_floating_ip_network: "CUDN-Internet"
 image_build_source_image_id: "2a77064b-be40-4065-b0f4-4d5417a4460a"
 image_build_security_group_id: "486dfc85-099b-4bbb-9375-60f320a7de18"
+image_build_ssh_keypair_name: "matta-stack"
+image_build_packer_extra_args: "-on-error=abort"