This change adds a NOT NULL constraint to the created_at column in the segment table.
All occurrences of CreatedAt as a pointer are changed to non pointer version (metabase, segment loop, etc)
Change-Id: I3efd476ebd1edd3327b69c9223d9edc800e1cc52
So far we were setting ZombieDeletionDeadline alwasy as nil and because of that DB default was never set. This change adds separate query for inserting object if deadline is not set.
Change-Id: I3d6a16570e7c74b5304e13edad8c7adcd021340c
metabase has become a central concept and it's more suitable for it to
be directly nested under satellite rather than being part of metainfo.
metainfo is going to be the "endpoint" logic for handling requests.
Change-Id: I53770d6761ac1e9a1283b5aa68f471b21e784198
