Make dynamic inventory return byte str, not unicode

lib/ansible/utils/__init__.py

@@ -1215,6 +1215,25 @@ def to_unicode(value):
         return value
     return value.decode("utf-8")
 
+def json_dict_unicode_to_bytes(d):
+    ''' Recursively convert dict keys and values to byte str
+
+        Specialized for json return because this only handles, lists, tuples,
+        and dict container types (the containers that the json module returns)
+    '''
+
+    if isinstance(d, unicode):
+        return d.encode('utf-8')
+    elif isinstance(d, dict):
+        return dict(map(json_dict_unicode_to_bytes, d.iteritems()))
+    elif isinstance(d, list):
+        return list(map(json_dict_unicode_to_bytes, d))
+    elif isinstance(d, tuple):
+        return tuple(map(json_dict_unicode_to_bytes, d))
+    else:
+        return d
+
+
 def get_diff(diff):
     # called by --diff usage in playbook and runner via callbacks
     # include names in diffs 'before' and 'after' and do diff -U 10