Stardardize Tracetest server logging

[danielbdias]

Describe the enhancement you'd like to see

Today we have Tracetest server logs made using golang log and fmt packages, making it difficult to define a log level or do a system-wide configuration for logs (like formatting it to JSON to allow ELK-based systems to process it.)

We should normalize them for a unique logger engine and allow the user to configure it to fit these logs for their operation. Two good log providers that we can see are https://github.com/uber-go/zap and https://github.com/sirupsen/logrus .