Add logs add targets with more details

[kairoaraujo]

Add more logs for add targets.

[kairoaraujo]

Extend it to kaprien-repo-worker

[kairoaraujo]

It was closed by mistake. Issue reopened.

[MVrachev]

What about we discuss a prefix of our logs which will help us identify where this log comes from?

[lukpueh]

See Logging HOWTO

A good convention to use when naming loggers is to use a module-level logger, in each module which uses logging, named as follows:

logger = logging.getLogger(__name__)

This means that logger names track the package/module hierarchy, and it’s intuitively obvious where events are logged just from the logger name.