Set a minimum validator commission rate of 5%

Very low commissions rates are bad for our network with validators commissions rates racing to the bottom. Validators potentially running at a loss to gain share of delegation is unhealthy and doesn’t encourage decentralization. This proposal is to set a minimum validator commission of 5%. This could either be enforced through a change in the network via a software upgrade at a later date and/or by limiting any RND/Community/Foundation delegations to those validators with 5% commission rate or greater. See here for more details and discussion: https://forum.regen.network/t/set-the-validator-minimum-commission-rate-to-5/316