python: futurize -f lib2to3.fixes.fix_except

Convert "except X, T" to "except X as T".

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 lib2to3.fixes.fix_except $py

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20180608122952.2009-10-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

scripts/simpletrace.py

@@ -45,7 +45,7 @@ def get_record(edict, idtoname, rechdr, fobj):
         rec = (name, rechdr[1], rechdr[3])
         try:
             event = edict[name]
-        except KeyError, e:
+        except KeyError as e:
             import sys
             sys.stderr.write('%s event is logged but is not declared ' \
                              'in the trace events file, try using ' \