Adds a NewShard method.
Adds a NewShard method.

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