x/ibc: default genesis state for sims (cosmos#6158)

* x/ibc: default genesis state for sims

* add ibc and transfer module to simulations

* minor update

* remove TODO

* add validation to transfer genesis

* fix transfer init genesis

* address @alexanderbez comments

app.go

@@ -320,6 +320,8 @@ func NewSimApp(
 		slashing.NewAppModule(appCodec, app.SlashingKeeper, app.AccountKeeper, app.BankKeeper, app.StakingKeeper),
 		params.NewAppModule(app.ParamsKeeper),
 		evidence.NewAppModule(app.EvidenceKeeper),
+		ibc.NewAppModule(app.IBCKeeper),
+		transferModule,
 	)
 
 	app.sm.RegisterStoreDecoders()

sim_test.go

@@ -23,6 +23,8 @@ import (
 	distr "github.com/cosmos/cosmos-sdk/x/distribution"
 	"github.com/cosmos/cosmos-sdk/x/evidence"
 	"github.com/cosmos/cosmos-sdk/x/gov"
+	"github.com/cosmos/cosmos-sdk/x/ibc"
+	transfer "github.com/cosmos/cosmos-sdk/x/ibc/20-transfer"
 	"github.com/cosmos/cosmos-sdk/x/mint"
 	paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
 	"github.com/cosmos/cosmos-sdk/x/simulation"
@@ -160,6 +162,8 @@ func TestAppImportExport(t *testing.T) {
 		{app.keys[gov.StoreKey], newApp.keys[gov.StoreKey], [][]byte{}},
 		{app.keys[evidence.StoreKey], newApp.keys[evidence.StoreKey], [][]byte{}},
 		{app.keys[capability.StoreKey], newApp.keys[capability.StoreKey], [][]byte{}},
+		{app.keys[ibc.StoreKey], newApp.keys[ibc.StoreKey], [][]byte{}},
+		{app.keys[transfer.StoreKey], newApp.keys[transfer.StoreKey], [][]byte{}},
 	}
 
 	for _, skp := range storeKeysPrefixes {