Updates Deckhand to use alembic to manage database upgrades.
Moves from creating tables at startup of Deckhand to the
db-sync job.
Change-Id: I6f4cb237fadc46fbee81d1c33096f48a720f589f
- Support configured Postgres admin password
- Use secrets for database job environment setup
- Remove superuser rights from deckhand user
Change-Id: I9d8eee1af864b0e99ee7c8a01a6bba84cfcb67f9