Removed all test data from Alembic migrations
Completes STT-848 and STT-974.
Along the way:
- Switched tests to get all of their data from the TestDataGenerator
- TDG uses exisitng Facilities and Capabilities now for realistic-ness
- Refactored SolCap API tests to avoid globals
- Restricted SolCaps to not have null Solicitation or Capability ID's
- Generalized AR API tests to include GBT and VLA AR's, removed unnecessary GBT-specific AR API tests
Edited by Sam Kagan