* #9045 - remove legacy fields from Provider
* Add safegaurd for legacy data to migration
* 9045 remove fields from forms and tables
* Update unrelated tests to use ASN model instead of Provider
* Fix migrations collision
Co-authored-by: jeremystretch <jstretch@ns1.com>
Replaces all usages of the TenantColumn with the new TenancyColumnsMixin.
This enables the user to add a column for Tenant Group on all tables which
also has a column for Tenant.