elasticsearch/elasticsearch — pull request #4462 by spinscale (2013-12-16 11:41:45+00:00)
Title: Allow GetAliasRequest to retrieve all aliases

Results in less data being sent over the wire, as the Cat API does not
need to have the whole cluster state.

Also added matchers for hasKey() for immutable open map (I think we should
add more of those to have map style assertions).

Closes #4455