Security Get API Key is missing "owner" parameter in REST spec.

[codebrain]

The security.get_api_key.json file is missing the "owner" parameter.

This was patched locally for the .NET client, as demonstrated here.

elastic/elasticsearch-net@329be8d

Applies to version 7.4+

[elasticmachine]

Pinging @elastic/es-security (:Security/Authentication)