Add headless parameter and disable headless by default

Author: taylorific

oraclelinux/cloud/x86_64/oracle-linux-9-bios-x86_64.pkrvars.hcl

@@ -1,4 +1,5 @@
+# https://yum.oracle.com/oracle-linux-templates.html
 efi_boot     = false
-iso_checksum = "7f1cf4e1fafda55bb4d837d0eeb9592d60e896fa56565081fc4d8519c0a3fd1a"
-iso_url = "https://yum.oracle.com/templates/OracleLinux/OL9/u4/x86_64/OL9U4_x86_64-kvm-b234.qcow2"
+iso_checksum = "f1b8f0ca281570dda5e844485d6a300d1a13a629272ffdff4ec84bf56b76b1fc"
+iso_url = "https://yum.oracle.com/templates/OracleLinux/OL9/u5/x86_64/OL9U5_x86_64-kvm-b259.qcow2"
 vm_name = "oracle-linux-9-bios-x86_64"

oraclelinux/cloud/x86_64/oracle-linux.pkr.hcl

@@ -22,6 +22,11 @@ variable "efi_firmware_vars" {
   default = null
 }
 
+variable "headless" {
+  type    = bool
+  default = true
+}
+
 variable "ssh_username" {
   type    = string
   default = "packer"
@@ -79,6 +84,7 @@ source "qemu" "oracle-linux" {
   disk_compression = true
   disk_image       = true
   disk_size        = "42G"
+  headless         = var.headles
   iso_checksum     = var.iso_checksum
   iso_url          = var.iso_url
   qemuargs = [