References: jsc#SLE-6262, fate#327048: KVM: Boot Configuration Override (virt-manager)

Subject: virt-xml: Add --no-define argument
From: Marc Hartmayer mhartmay@linux.ibm.com Tue Feb 26 10:56:41 2019 +0100
Date: Wed Mar 6 13:15:38 2019 -0500:
Git: 29f9f2ac9c168b29043e8a443d354f2b7802c9f9

Add `--no-define` argument. It's mutually exclusive to the `--define`
argument and later on it allows the user to start a domain
transiently.

Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>

Index: virt-manager-2.1.0/virt-xml
===================================================================
--- virt-manager-2.1.0.orig/virt-xml
+++ virt-manager-2.1.0/virt-xml
@@ -363,9 +363,13 @@ def parse_args():
                "With --add-device, this is a hotplug operation.\n"
                "With --remove-device, this is a hotunplug operation.\n"
                "With --edit, this is an update device operation."))
-    outg.add_argument("--define", action="store_true",
-        help=_("Force defining the domain. Only required if a --print "
-               "option was specified."))
+    define_g = outg.add_mutually_exclusive_group()
+    define_g.add_argument("--define", action="store_true",
+                          help=_("Force defining the domain. Only required if a --print "
+                                 "option was specified."))
+    define_g.add_argument("--no-define", dest='define', action="store_false",
+                          help=_("Force not defining the domain."))
+    define_g.set_defaults(define=None)
     outg.add_argument("--print-diff", action="store_true",
         help=_("Only print the requested change, in diff format"))
     outg.add_argument("--print-xml", action="store_true",
@@ -426,7 +430,8 @@ def main(conn=None):
             if not options.define:
                 options.print_xml = True
         else:
-            options.define = True
+            if options.define is None:
+                options.define = True
     if options.confirm and not options.print_xml:
         options.print_diff = True