Production logs shouldn't have shell codes in them

[markstory]

While colourized logs are nice for local development, in production we should disable colourization of logs as it make logging harder to read.

[markstory]

We already have non-colorized logging setup. By setting log_format: json in the config file or TASKBROKER_LOG_FORMAT=json as an environment variable.

[john-z-yang]

@markstory

Are there any further actions required for this task? I didn't read the comment and I created a pr to add an option to disable ANSI encoding (which is those shell code), but I'm not sure if that's necessary given we already have log_format: json.

#109

I think we should either merge this PR or close this issue. Personally I don't see the use of disabling ANSI given we have log_format: json, but I'm happy with either!

[markstory]

I don't think there is anything else we need to do. The existing json formatting will cover our needs in production.