We were using mixed types for nonce fields. Protobuf
have storj.Nonce, metabase have []byte. This change
is a refactoring to have everywere its possible only
storj.Nonce.
Change-Id: Id54bd8481f30c721cdaf3df79206d25e7cfdab55
Loops are using custom structs to provide
segments while iterating/looping so we need
to expose new field there too.
Change-Id: I12c8f4a01afeac171bf638d278253999fa90a8cb
We added expires_at column to segments table and now
we need to populate this column while committing segment.
We still need to migrate existing segments with
separate tool.
Change-Id: Ibac8c63d97201dd98cc2cb9db385f4cb73bc3f7e