hob: fix for XMLRPC mode

Contains a small fix to the builder.py code
(a missing "self" in a variable assignment).
With this changes, "hob" can run with the XMLRPC backend:

$ hob -t xmlrpc

Signed-off-by: Bogdan Marinescu <bogdan.a.marinescu@intel.com>
Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
bin/bitbake: Fix queue import for pyhton 2 and 3

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