Issue when checking oauth2 token (client_credentials grant)

[aalonsog]

When sending a validation request (/v3/access-tokens/{token}) with an Oauth2 token created using grant_type=client_credentials, the response is

{ "error": { "message": "object of type 'NoneType' has no len()", "code": 400, "title": "Bad Request" } }

[federicofdez]

Solved in https://github.com/ging/keystone/commit/faa2a88d0db9c0f0b5d16af836b3ec37d568c61c but still to be deployed.