Timizuo

> Great Work looks awesome! I was playing around with it. When I specify a filter but not a value, it says that I specified an invalid filter. Is it...

> The DeviceType Filters in DeviceListView seem to be broken. The choices in the dropdown are not populating, can you confirm that on your end? @timizuoebideri1 @HanlinMiao works for me

Test case changes on https://github.com/nautobot/nautobot/pull/3342 can now be moved into `generic_filter_tests` since they are all now all `multi-value filters`