Reduce the Minimum STAKE Validator Amount to 2,000 STAKE

According to the reduction of the delegation amount, this proposal is for reducing the amount for validators to 2,000 STAKE. The reduction is compared to the Ethereum 2 Staking with 32 ETH, which is approximately $44,800. This would be about 2,400 STAKE. For simplification it should be 2,000 STAKE (market value of ~ $38,000 on 12/19/2020). This would make it much easier to for new validators to enter and reduce centralization.