Refactor to move from sqlite3 to postgres as the backend db for all apps.
Refactor ts data collection for postgres. Remove zmq sink as we can have a
dedicated concurrent connection to postgres.
Simplify smd as part of it's eventual deprecation.
Remove old(sqlite) backup plugin migrations
Update buildout for postgres
Move ts data truncation into the same collection process.
Update task scheduler code for postgres -- mostly cosmetic.