python: futurize -f libfuturize.fixes.fix_absolute_import

Make implicit relative imports explicit and add "from __future__ import
absolute_import" at the top of each relevant module.

This is necessary for Python 3 compatibility.

Done using:

  $ py=$( (g grep -l -E '^#!.*python';find -name '*.py' -printf '%P\n';) | \
    sort -u | grep -v README.sh4)
  $ futurize -w -f libfuturize.fixes.fix_absolute_import $py

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20180608122952.2009-3-ehabkost@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

scripts/qmp/qom-tree

@@ -14,9 +14,10 @@
 ##
 
 from __future__ import print_function
+from __future__ import absolute_import
 import sys
 import os
-from qmp import QEMUMonitorProtocol
+from .qmp import QEMUMonitorProtocol
 
 cmd, args = sys.argv[0], sys.argv[1:]
 socket_path = None