YIP-38-3: When to roll rewards to the next 2 month’s contracts.

Title: When to roll rewards to the next 2 month’s contracts. Author: @Feddas Forum discussions: https://forum.yam.finance/t/distrbution-of-uma-rewards-for-ugas-and-yam-treasury-liquidity-mining-proposal-and-liquidation-bot/1138

Basic Summary This snapshot is only to determine which day of the month to roll rewards forward to the next 2 months.