revert MinGasPrice change

Author: sainoe

tests/interchain/chainsuite/config.go

@@ -31,7 +31,7 @@ const (
 	GovMinDepositString        = "1000" + Stake
 	GovDepositPeriod           = 10 * time.Second
 	GovVotingPeriod            = 15 * time.Second
-	GasPrices                  = "100" //TODO: fix min gas
+	GasPrices                  = "0.005"
 	UpgradeDelta               = 30
 	SlashingWindowConsumer     = 20
 	CommitTimeout              = 2 * time.Second