Fix has_key() for Python3.x: Apply "2to3 -w -f has_key" - Use: x (not) in y

[bernhardkaindl]

Apply a reviewed and fully automated fixup from the 2to3 tool:

• Apply: 2to3 -w -f has_key:

  • Use: x in y (or x not in y)

    • Commit: https://github.com/xenserver/status-report/commit/13556ad3bb8d52b720db43ebc035f795cb41e00b