File fix-wait.patch of Package cobbler.openSUSE_Leap_42.3_Update

Index: cobbler-2.6.6/koan/app.py
===================================================================
--- cobbler-2.6.6.orig/koan/app.py
+++ cobbler-2.6.6/koan/app.py
@@ -332,7 +332,7 @@ class Koan:
         self.qemu_machine_type = None
         self.virt_auto_boot    = None
         self.virt_pxe_boot     = None
-        self.virtinstall_wait  = None
+        self.virtinstall_wait  = 0
         self.virtinstall_noreboot = None
         self.virtinstall_osimport = None