refactor: set default minimum gas prices

cmd/sedad/cmd/config_defaults.go

@@ -52,7 +52,7 @@ func initAppConfig() (string, interface{}) {
 	//   own app.toml to override, or use this default value.
 	//
 	// In simapp, we set the min gas prices to 0.
-	srvCfg.MinGasPrices = "0seda"
+	srvCfg.MinGasPrices = "100000000000aseda" // 10^11 aseda
 
 	// GRPC settings
 	srvCfg.GRPC.Enable = true