Changes to the logger so it's output is compatible with loggly
- Changed the default logger to https://github.com/uber-go/zap
- JSON logging by default
- 'ts' changed to 'timestamp' in ISO8601
- added a function called SetDefaultKeyValues to be used in logs output
var logger *logging.Logger = logging.Get()
logger.SetDefaultKeyValues(zap.String("app", "myapp"), zap.String("name", "microservicename"), zap.String("env", "development"))