x/staking: skip HistoricalInfo in simulations (cosmos#5949)

* x/staking: import and export HistoricalInfo

* staking/types: add HistoricalInfo to GenesisState

* changelog

* add staking module to app BeginBlockers

* remove JSON files

* address comments from review

* add HistoricalInfoKey to skipped prefixes

* fix DiffKVStores

* rm JSON

app.go

@@ -236,7 +236,7 @@ func NewSimApp(
 	// During begin block slashing happens after distr.BeginBlocker so that
 	// there is nothing left over in the validator fee pool, so as to keep the
 	// CanWithdrawInvariant invariant.
-	app.mm.SetOrderBeginBlockers(upgrade.ModuleName, mint.ModuleName, distr.ModuleName, slashing.ModuleName, evidence.ModuleName)
+	app.mm.SetOrderBeginBlockers(upgrade.ModuleName, mint.ModuleName, distr.ModuleName, slashing.ModuleName, evidence.ModuleName, staking.ModuleName)
 	app.mm.SetOrderEndBlockers(crisis.ModuleName, gov.ModuleName, staking.ModuleName)
 
 	// NOTE: The genutils moodule must occur after staking so that pools are

sim_test.go

@@ -148,6 +148,7 @@ func TestAppImportExport(t *testing.T) {
 		{app.keys[staking.StoreKey], newApp.keys[staking.StoreKey],
 			[][]byte{
 				staking.UnbondingQueueKey, staking.RedelegationQueueKey, staking.ValidatorQueueKey,
+				staking.HistoricalInfoKey,
 			}}, // ordering may change but it doesn't matter
 		{app.keys[slashing.StoreKey], newApp.keys[slashing.StoreKey], [][]byte{}},
 		{app.keys[mint.StoreKey], newApp.keys[mint.StoreKey], [][]byte{}},