Returned get_utf8_value for mturk dependency

boto/utils.py

@@ -862,6 +862,20 @@ def notify(subject, body=None, html_body=None, to_string=None,
             boto.log.exception('notify failed')
 
 
+def get_utf8_value(value):
+    if isinstance(value, bytes):
+        value.decode('utf-8')
+        return value
+
+    if not isinstance(value, six.string_types):
+        value = six.text_type(value)
+
+    if isinstance(value, six.text_type):
+        value = value.encode('utf-8')
+
+    return value
+
+
 def mklist(value):
     if not isinstance(value, list):
         if isinstance(value, tuple):