* remove druid datasource from the config
* remove config related references to DruidDatasource
* Update __init__.py
* Update __init__.py
* Update manager.py
* remove config related references to DruidDatasource
* raise if instance type is not valid
* fix: set correct schema on config import
* Fix lint
* Fix test
* Fix tests
* Fix another test
* Fix another test
* Fix base test
* Add helper function
* Fix examples
* Fix test
* Fix test
* Fixing more tests
* abstract boilerplate code into class and rename csv to file
* add db migration
* fix some stuff
* more renaming of csv to file
* rename in translations
* update down revision
* update down revision
* bump chart version
* switch to alter column name approach in db migration
* fix db migration for MySQL
* db migration conflict