RFE - Gather logs from OSBUILD

[oglok]

If a build fails, there is no logs or information provided by the collection to know why it has failed.
For example, if you add some kernel customizations to the builder_compose_customizations ansible var:

builder_compose_customizations:
  kernel:
    append: "nomst=force"

and try to build an ostree image, osbuild composer will fail.
The only way to know what happened is to ssh into the build host, and check the journal for osbuild-composer service.

[chadmf]

Should not be much work to add a if fail collect log routine.

[resoluteCoder]

The builder role will return logs on anything osbuild composer related