Allow logger to be lazy and converted on first use

[mhenrixon]

The problem otherwise is that there is a load order problem in unique jobs. At least this way I can assign the logger regardless of how files are loaded.

[mberlanda]

Overall I trust you 😄
Would it be possible to add a test and/or an example of configuration with and without proc? This would make the change more documented

[mhenrixon]

If you have a look at the labels there is a wip label meaning this is work in progress. When I'm ready to have it reviewed I'll change that label to ready for review.

Usually, I change it when I've added tests and in some way or form verified that the code does what I expect it to do.

still wip