Description of problem:
The following error message on `docker run --rm -it jamesantill/boltron-27 dnf module install python3-ecosystem` doesn't say what profile is missing: 
Error: No such profile: python3-ecosystem:master:20171011080225

In [1] Stephen Gallagher said: "The error message for the missing profile doesn't say which profile was requested (which would be obvious if the user had supplied it themselves, but if it's a bad default, we should indicate that clearly so it's easy for the user to identify the source of the problem). This will also result in bug reports if we ever accidentally or intentionally get out of sync between defaults and available profiles."

[1] Bug 1503030 comment 6