Proposal to raise A parameter on HBTC pool to 1000

Summary:

HBTC pool currently has A of 300. Proposal is to raise to 1000

Abstract:

@michwill , @nagaking and Gauge Risk team believe A can safely be increased substantially. It is considered safe because HBTC is readily redeemable from Huobi. Increasing A will improve liquidity depth and arbitrage potential, increasing fees to the DAO.

Specification:

HBTC pool simulations by @nagaking :