fixes https://github.com/elasticsearch/elasticsearch-py/issues/62

the parameter `ignore_indices` was replaced with `ignore_unavailable`, `expand_wildcards` and `allow_no_indices`.
see https://github.com/elasticsearch/elasticsearch/commit/f4bf0d5112b5c6f29b651586d72c3972db5a2834

elasticsearch-py still uses the not supported `ignore_indices`-parameter.