Add support for include_type_name parameter

[PhaedrusTheGreek]

ES 6.x will throw a deprecation warning on calls to the rollover API (and likely any others that allow you to work with mappings) if the include_type_name parameter is not explicitly specified.

... WARN - elasticsearch[node-1][http_server_worker][T#10] 1000 - - [org.elasticsearch.deprecation.rest.action.admin.indices.RestRolloverIndexAction] [node-1] [types removal] The parameter include_type_name should be explicitly specified in rollover requests to prepare for 7.0. In 7.0 include_type_name will default to 'false', which means requests must omit the type name in mapping definitions.

This seems to be the associated elasticsearch-py update.