Support terminate_after for count api. (elastic#754)

Author: fatelei

elasticsearch/client/__init__.py

@@ -1066,7 +1066,7 @@ def delete(self, index, doc_type, id, params=None):
 
  @query_params('allow_no_indices', 'analyze_wildcard', 'analyzer',
  'default_operator', 'df', 'expand_wildcards', 'ignore_unavailable',
- 'lenient', 'min_score', 'preference', 'q', 'routing')
+ 'lenient', 'min_score', 'preference', 'q', 'routing', 'terminate_after')
  def count(self, index=None, doc_type=None, body=None, params=None):
  """
  Execute a query and get the number of matches for that query.