fix timeout argument

Author: rhsimplex

image_match/elasticsearch_driver.py

@@ -9,7 +9,7 @@ class SignatureES(SignatureDatabaseBase):
 
     """
 
-    def __init__(self, es, index='images', doc_type='image', timeout=10, size=100,
+    def __init__(self, es, index='images', doc_type='image', timeout='10s', size=100,
                  *args, **kwargs):
         """Extra setup for Elasticsearch