Change logging behaviour.

[evanlinjin]

We have a clash between tags of whole node level and here on subsystem level. It becames evident in case when all logs are collected by syslog or docker logging driver.

I propose to consider composite tags, e.g.

logging.MustGetLogger(fmt.Sprintf("%v:tp_manager", node.Name) //node.Name is hypotethetical new config value

_Originally posted by @ayuryshev in https://github.com/render_node/MDI0OlB1bGxSZXF1ZXN0UmV2aWV3Q29tbWVudDI3Nzk0NDIzMw==/comments/review_comment

[jdknives]

@ayuryshev has this been considered in #416