Best Practice? No. Unacceptable? No, as long as these modules only have configuration data, and are marked as configuration files in the packages that they come from.
Purists would say configuration information should never live in a module; if you're writing something new from scratch, I'm a fan of YAML, but not everyone likes it. For something that already exists, configuration info in a module is fine.
Alex / talexb / Toronto
"Groklaw is the open-source mentality applied to legal research" ~ Linus Torvalds