Codec not considered

[guenhter]

• Version: 7.2.0

• Operating System: Debian 9.9

• Config File (if you have sensitive info, please remove it):

  
  input {
  stdin { }
  }

output { websocket { port => 8080 codec => line { format => "test"} } stdout { codec => line { format => "test"} } }

- Steps to Reproduce:
Post a message: 
* The stdout gets results in "test" but the websocket output results in a full output with all the builderblate tags like version, time, ...

[stevenklassen8376]

I would also be interested in seeing this get fixed.