This sets the corresponding _numeric columns to be NOT NULL (it has been
verified manually that there are no more NULL _numeric values on any
known satellites, and it should be impossible with current code to get
new NULL values in the _numeric columns.
We can't drop the _gob columns immediately, as there will still be code
running that expects them, but once this version is deployed we can
finally drop them and be totally done with this crazy 5-step migration.
Change-Id: I518302528d972090d56b3eedc815656610ac8e73
Remove redundant suspension timestamp column from nodes and reputation tables.
Suspended timestamp was moved to unknown_audit_suspended and suspended column is
no longer used so there is no point in keeping both.
Change-Id: Ieea3f12141b33ec9efe7594f4c9dbc7e10675b0e
