* sqlstore: Run tests as integration tests
* Truncate database instead of re-creating it on each test
* Fix test description
See https://github.com/grafana/grafana/pull/12129
* Fix lint issues
* Fix postgres dialect after review suggestion
* Rename and document functions after review suggestion
* Add periods
* Fix auto-increment value for mysql dialect
Co-authored-by: Emil Tullstedt <emil.tullstedt@grafana.com>