Utility methods for handling NM integration with standard Red Hat ifcfg files. Given an ifcfg file, return various internal information about it. The full path to an ifcfg file. The UUID of the NM connection backed by this ifcfg file. If the ifcfg file does not contain a UUID tag, this UUID is generated by NM, otherwise the UUID from the ifcfg file is used. The object path of the NM connected backed by this ifcfg file.