kvm: skip disk-image-corruption promise check if there is no disk

If qemu use physical disk device instead of created qemu image disk, we skip this promise.

/reviewed-on nexedi/slapos!507

software/kvm/instance-kvm.cfg.jinja2

@@ -228,6 +228,10 @@ input = inline:#!/bin/sh
   # Return code 0 is "OK"
   # Return code 3 is "found leaks, but image is OK"
   # http://git.qemu.org/?p=qemu.git;a=blob;f=qemu-img.c;h=4e9a7f5741c9cb863d978225829e68fefcae3947;hb=HEAD#l702
+  if [ "${slap-parameter:disk-device-path}" != "" ]; then
+    # disk device option is used, skip qemu img check
+    exit 0
+  fi
   ${kvm-parameter-dict:qemu-img-path} check -U ${kvm-parameter-dict:disk-path}
   RETURN_CODE=$?
   if [ $RETURN_CODE -eq 0 ] || [ $RETURN_CODE -eq 3 ]; then

software/kvm/software.cfg

@@ -99,7 +99,7 @@ recipe = hexagonit.recipe.download
 ignore-existing = true
 url = ${:_profile_base_location_}/instance-kvm.cfg.jinja2
 mode = 644
-md5sum = 93ffbb44a88f4fb0d7fd458bc67a6b22
+md5sum = e30912b1256bb093329ee3c108666f05
 download-only = true
 on-update = true