OIP-63: Reward rate adjustment

Summary

Adjust reward rate to the minimum of the current range according to OIP-18. That would be a 0.1587% reward rate, which translates to around 1,000% APY. The adjustment would be spaced out across 4 weeks with the reward rate adjusting each epoch.

Additional context, explanation and discussion of this proposal can be found on the forum:

https://forum.olympusdao.finance/d/755-oip-63-reward-rate-adjustment

Vote

For: Adjust reward rate to 0.1587% of total supply (from the current 0.2975%) Against: Do nothing