testnet faucet (#281)

* testnet faucet

* commands

* updates

* faucet module

* genesis state

* fixes

* module.go

* add module to app

* update Fund

* querier route

* querier

* CLI query

* fix query

* add rest routes

* update cli query

app/ethermint.go

@@ -29,6 +29,7 @@ import (
 	"github.com/cosmos/ethermint/app/ante"
 	eminttypes "github.com/cosmos/ethermint/types"
 	"github.com/cosmos/ethermint/x/evm"
+	"github.com/cosmos/ethermint/x/faucet"
 
 	abci "github.com/tendermint/tendermint/abci/types"
 	"github.com/tendermint/tendermint/libs/log"
@@ -64,6 +65,7 @@ var (
 		slashing.AppModuleBasic{},
 		evidence.AppModuleBasic{},
 		evm.AppModuleBasic{},
+		faucet.AppModuleBasic{},
 	)
 
 	// module account permissions
@@ -74,6 +76,7 @@ var (
 		staking.BondedPoolName:    {supply.Burner, supply.Staking},
 		staking.NotBondedPoolName: {supply.Burner, supply.Staking},
 		gov.ModuleName:            {supply.Burner},
+		faucet.ModuleName:         {supply.Minter},
 	}
 
 	// module accounts that are allowed to receive tokens
@@ -113,6 +116,7 @@ type EthermintApp struct {
 	ParamsKeeper   params.Keeper
 	EvidenceKeeper evidence.Keeper
 	EvmKeeper      evm.Keeper
+	FaucetKeeper   faucet.Keeper
 
 	// the module manager
 	mm *module.Manager
@@ -144,6 +148,7 @@ func NewEthermintApp(
 		bam.MainStoreKey, auth.StoreKey, bank.StoreKey, staking.StoreKey,
 		supply.StoreKey, mint.StoreKey, distr.StoreKey, slashing.StoreKey,
 		gov.StoreKey, params.StoreKey, evidence.StoreKey, evm.CodeKey, evm.StoreKey,
+		faucet.StoreKey,
 	)
 	blockKey := sdk.NewKVStoreKey(evm.BlockKey)
 
@@ -201,6 +206,10 @@ func NewEthermintApp(
 		app.cdc, blockKey, keys[evm.CodeKey], keys[evm.StoreKey], app.AccountKeeper,
 		app.BankKeeper,
 	)
+	// TODO: use protobuf
+	app.FaucetKeeper = faucet.NewKeeper(
+		app.cdc, keys[faucet.StoreKey], app.SupplyKeeper,
+	)
 
 	// create evidence keeper with router
 	evidenceKeeper := evidence.NewKeeper(
@@ -242,6 +251,7 @@ func NewEthermintApp(
 		staking.NewAppModule(app.StakingKeeper, app.AccountKeeper, app.BankKeeper, app.SupplyKeeper),
 		evidence.NewAppModule(app.EvidenceKeeper),
 		evm.NewAppModule(app.EvmKeeper, app.AccountKeeper),
+		faucet.NewAppModule(app.FaucetKeeper),
 	)
 
 	// During begin block slashing happens after distr.BeginBlocker so that
@@ -261,6 +271,7 @@ func NewEthermintApp(
 		auth.ModuleName, distr.ModuleName, staking.ModuleName, bank.ModuleName,
 		slashing.ModuleName, gov.ModuleName, mint.ModuleName, supply.ModuleName,
 		crisis.ModuleName, genutil.ModuleName, evidence.ModuleName, evm.ModuleName,
+		faucet.ModuleName,
 	)
 
 	app.mm.RegisterInvariants(&app.CrisisKeeper)