Add VBox Type where available

distros/rockylinux/8/amd64.pkrvars.hcl

@@ -1,8 +1,8 @@
 distro = "rockylinux"
 version = "8"
 iso = {
-	url = "http://download.rockylinux.org/pub/rocky/9/isos/x86_64/Rocky-9.3-x86_64-boot.iso"
-	checksum = "eb096f0518e310f722d5ebd4c69f0322df4fc152c6189f93c5c797dc25f3d2e1"
+	url = "https://download.rockylinux.org/pub/rocky/8/isos/x86_64/Rocky-8.9-x86_64-boot.iso"
+	checksum = "88baefca6f0e78b53613773954e0d7c2d8d28ad863f40623db75c40f505b5105"
 }
 boot_command = [
   "<up>e<wait>",
@@ -10,4 +10,5 @@ boot_command = [
   " inst.text inst.ks=cdrom:/ks.cfg",
   "<leftCtrlOn>x<leftCtrlOff>"
 ]
-cd_files = [ "distros/rockylinux/9/disc/*" ]
+cd_files = [ "distros/rockylinux/8/disc/*" ]
+vbox_os_type = "RedHat8_64"

distros/rockylinux/9/amd64.pkrvars.hcl

@@ -11,3 +11,4 @@ boot_command = [
   "<leftCtrlOn>x<leftCtrlOff>"
 ]
 cd_files = [ "distros/rockylinux/9/disc/*" ]
+vbox_os_type = "RedHat9_64"