Set waiting period during ap-voting contract setup

[maurolacy]

Currently the ap-voting contract config in genesis

tgrade/x/poe/types/genesis.go

Lines 73 to 83 in ba7042f

	ArbiterPoolContractConfig: &ArbiterPoolContractConfig{
	Name: "Arbiter Pool",
	EscrowAmount: sdk.NewCoin(DefaultBondDenom, sdk.NewInt(1_000_000)),
	VotingRules: VotingRules{
	VotingPeriod: 30,
	Quorum: sdk.NewDec(51),
	Threshold: sdk.NewDec(55),
	AllowEndEarly: true,
	},
	DisputeCost: sdk.NewCoin(DefaultBondDenom, sdk.NewInt(1_000_000)),
	},

does not define a waiting period. This leaves the field at zero, which renders the contract unusable.