Adds the start of the traffic library.
Adds the start of the traffic library.

This library can be used to generate traffic for testing git like file
systems.

klucar/pachyderm,kunthar/pachyderm,klucar/pachyderm,wideioltd/pachyderm,henrylee2cn/pachyderm,sambooo/pachyderm,sambooo/pachyderm,alexdebrie/pachyderm,wideioltd/pachyderm,henrylee2cn/pachyderm,sambooo/pachyderm,ShengjieLuo/pachyderm,ShengjieLuo/pachyderm,alexdebrie/pachyderm,phacops/pachyderm,kunthar/pachyderm,pachyderm/pfs,klucar/pachyderm,phacops/pachyderm,alexdebrie/pachyderm,pachyderm/pfs,pachyderm/pfs,ShengjieLuo/pachyderm