bitbake: toaster: fix urllib imports

Some functions have been moved from urllib to urllib.parse
in python 3. Modifying the code to import unquote, urlencode and
unquote_plus from urllib.parse if import from urllib fails should
make it working on both python 2 and python 3.

(Bitbake rev: b91aa29fa20befd9841678a727bb91100363518f)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/toaster/toastergui/widgets.py

@@ -38,7 +38,11 @@ import json
 import collections
 import operator
 import re
-import urllib
+
+try:
+    from urllib import unquote_plus
+except ImportError:
+    from urllib.parse import unquote_plus
 
 import logging
 logger = logging.getLogger("toaster")