ensure postgres database is always started
ensure postgres database is always started

The Postgres database would only get started on first launch. When starting a second time e.g. after a `docker-compose down` and `docker-compose up`, the database was not started resulting in a failure when ThingsBoard is starting.

(cherry picked from commit 7d5153f52ee4033c8a7ffab0a678950122b982eb)

thingsboard/thingsboard,thingsboard/thingsboard,thingsboard/thingsboard,volodymyr-babak/thingsboard,thingsboard/thingsboard,thingsboard/thingsboard,volodymyr-babak/thingsboard,thingsboard/thingsboard,volodymyr-babak/thingsboard,volodymyr-babak/thingsboard,volodymyr-babak/thingsboard,volodymyr-babak/thingsboard