* add collateral type field to cdp and collateral param
* fix upstream tests
* fix simulations
* fix validation logic
* update incentive to use collateral type instead of denom
* use collateral type instead of denom in cdp
* remove unused code
* address review comments
* Incentive module simulations (#439)
Co-authored-by: John Maheswaran <jmaheswaran@users.noreply.github.com>
Co-authored-by: Kevin Davis <karzak@users.noreply.github.com>
Co-authored-by: Kevin Davis <kjydavis3@gmail.com>
Co-authored-by: John Maheswaran <john@kava.io>