Added/renamed users
requested to merge dev/MIP-750/create-two-roles-that-limits-the-access-modification-of-the-primary-data-table into main
Created by: KFilippopolitis
- Now the default user is 'admin' not 'monetdb'.
- Now it possible to provide a non-default 'password' for the 'admin'.
- Added a executor user that can only retrieve data from the table not modify them.
- Fix the error that was thrown in the case that a csv contains a column that is not present on the CDEs.
- Using 'madgik/mipenginedb:testing' for testing. This should be reverted.