scripts/qmp: Use Python 3 interpreter

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200512103238.7078-4-philmd@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>

scripts/qmp/qom-get

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 ##
 # QEMU Object Model test tools
 #

scripts/qmp/qom-list

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 ##
 # QEMU Object Model test tools
 #

scripts/qmp/qom-set

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 ##
 # QEMU Object Model test tools
 #

scripts/qmp/qom-tree

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 ##
 # QEMU Object Model test tools
 #