Reworking vagrant docu.
Checked the fall back values.
Setting repo_packages_regex to default.

I'm not deleting it since I think it is a good idea to let other developers see that this is configurable.
Reworking docu for performance tweaking and troubleshooting.
Replacing .* by .+ when matching config viewer files.
Removing unused imports.
Importing load_configuration_file directly
Removing empty lines.
Removing empty lines.
Adapting output of rpm.build
These empty strings are not required.
Removing empty line.
Less concrete constant names.
Since we are checking if the directories already exist we can use ascii_letters.
Less concrete function names.
Grrr ... fixing names ... these are not types, but locations.
Using os.path.join instead of formatting the strings.
Using less concrete labels.
Using less concrete variable names.
Making min_count_of_hosts a constant.