celocli governance:build-proposal command fixes L2

[aaronmgdr]

governance:build-proposal

This command is for creating proposals it alllows some to go thru core contracts and create transactios to be executed. It currently however still gives outdated contracts like blockchain parameters as possiblities for what should be called. and missess some new contracts.

update it to remove the sunset contracts and add the new contracts

[aaronmgdr]

found during #406