Fix the listener thread pylint errors

************* Module osvcd_lsnr
E: 15, 0: Unable to import 'six.moves.queue' (import-error)

 => false positive: the "import six.moves.queue as queue" does work. Use
    "from six.moves import queue" instead, as it pleases pylint

E: 60,16: Undefined variable 'shutil' (undefined-variable)

 => good catch, the socket file clean up was actually silently stacking

E:781,57: Instance of 'Exception' has no 'errno' member (no-member)

 => false positive: we actually tested the existance of the errno attr before
    access. Use getattr(exc, "errno") instead of exc.errno to please pylint

lib/osvcd_lsnr.py

@@ -9,11 +9,12 @@
 import codecs
 import time
 import select
+import shutil
 from subprocess import Popen, PIPE
 
 import six
-import six.moves.queue as queue 
 import osvcd_shared as shared
+from six.moves import queue
 from rcGlobalEnv import rcEnv, Storage
 from rcUtilities import bdecode, drop_option, chunker
 from converters import convert_size
@@ -778,7 +779,7 @@ def _action_logs(self, nodename, logfile, obj, **kwargs):
                         try:
                             conn.sendall(message)
                         except Exception as exc:
-                            if hasattr(exc, "errno") and exc.errno == 32:
+                            if hasattr(exc, "errno") and getattr(exc, "errno") == 32:
                                 # Broken pipe (client has left)
                                 break
                     if backlog != 0: