Can we have MongoDB/Postgres to persist Mocks instead of file system

[vlolla]

[gwleclerc]

As many people are asking to use Smocker not as a testing tool but as a means of simulating missing services in a persistent environment. We plan to use an ORM to support both SQLite and Postgres to store sessions, mocks and histories.

Today we only use it as a volatile testing tool, and we want to keep this philosophy as much as possible.

This also explains a number of our choices, such as

• Smocker must be able to start without dependencies.
• Modifying a mock when it has already been called makes no sense, as it would make the call history inconsistent.