python: add __repr__ to ConsoleSocket to aid debugging

While attempting to debug some console weirdness I thought it would be
worth making it easier to see what it had inside.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20201210190417.31673-6-alex.bennee@linaro.org>

python/qemu/console_socket.py

@@ -45,6 +45,13 @@ def __init__(self, address: str, file: Optional[str] = None,
         if drain:
             self._drain_thread = self._thread_start()
 
+    def __repr__(self) -> str:
+        s = super().__repr__()
+        s = s.rstrip(">")
+        s = "%s,  logfile=%s, drain_thread=%s>" % (s, self._logfile,
+                                                   self._drain_thread)
+        return s
+
     def _drain_fn(self) -> None:
         """Drains the socket and runs while the socket is open."""
         while self._open: