bitbake: server/xmlrpcserver: Add missing xmlrpcclient import

This avoids backtraces when starting toaster or using bitbake in
remote mode.

(Bitbake rev: 1d583db85ba8fa3242e231af4d94274527c051a6)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/server/xmlrpcserver.py

@@ -11,6 +11,7 @@ import hashlib
 import time
 import inspect
 from xmlrpc.server import SimpleXMLRPCServer, SimpleXMLRPCRequestHandler
+import bb.server.xmlrpcclient
 
 import bb