lorax: disable debug output from xen and kernel

Prepare for production-quality release.

lorax-templates-qubes/templates/config_files/x86/isolinux.cfg

@@ -59,12 +59,12 @@ menu separator # insert an empty line
 label linux
   menu label ^Install @PRODUCT@
   kernel mboot.c32
-  append xen.gz console=none --- vmlinuz @ROOT@ quiet --- initrd.img
+  append xen.gz console=none --- vmlinuz @ROOT@ quiet rhgb --- initrd.img
 label check
   menu label Test this ^media & install @PRODUCT@
   menu default
   kernel mboot.c32
-  append xen.gz console=none --- vmlinuz @ROOT@ quiet rd.live.check --- initrd.img
+  append xen.gz console=none --- vmlinuz @ROOT@ quiet rhgb rd.live.check --- initrd.img
 menu separator # insert an empty line
 # utilities submenu
 menu begin ^Troubleshooting

lorax-templates-qubes/templates/config_files/x86/xen-efi.cfg

@@ -2,13 +2,13 @@
 default=qubes
 
 [qubes-check]
-options=loglvl=all
-kernel=vmlinuz @ROOT@ rd.live.check
+options=console=none
+kernel=vmlinuz @ROOT@ quiet rhgb rd.live.check
 ramdisk=initrd.img
 
 [qubes]
-options=loglvl=all
-kernel=vmlinuz @ROOT@
+options=console=none
+kernel=vmlinuz @ROOT@ quiet rhgb
 ramdisk=initrd.img
 
 [qubes-rescue]