bitbake: server/xmlrpcserver: Add missing xmlrpcclient import

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

(Bitbake rev: 19c3ae42ea15e40f345bf16fe58b26fe451cb7fc)

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