tree ccaa9de2fe8bb326fda7517fa10001eed727831d
parent 392442d3aa9fbfb67880942379415d5a442ef692
author Erick Tryzelaar <etryzelaar@google.com> 1534368121 -0700
committer Erick Tryzelaar <etryzelaar@google.com> 1534368121 -0700

Move {version,expires} into Metadata trait

These values are common across all metadata, so i tmakes
sense to lift them into the trait.