Implement BFT time (#2203)

* Implement BFT time

* set LastValidators when creating state in state helper

for heights >= 2

cmd/tendermint/commands/init.go

@@ -2,7 +2,6 @@ package commands
 
 import (
 	"fmt"
-	"time"
 
 	"github.com/spf13/cobra"
 
@@ -11,6 +10,7 @@ import (
 	"github.com/tendermint/tendermint/p2p"
 	"github.com/tendermint/tendermint/privval"
 	"github.com/tendermint/tendermint/types"
+	tmtime "github.com/tendermint/tendermint/types/time"
 )
 
 // InitFilesCmd initialises a fresh Tendermint Core instance.
@@ -54,7 +54,7 @@ func initFilesWithConfig(config *cfg.Config) error {
 	} else {
 		genDoc := types.GenesisDoc{
 			ChainID:         fmt.Sprintf("test-chain-%v", cmn.RandStr(6)),
-			GenesisTime:     time.Now(),
+			GenesisTime:     tmtime.Now(),
 			ConsensusParams: types.DefaultConsensusParams(),
 		}
 		genDoc.Validators = []types.GenesisValidator{{

cmd/tendermint/commands/testnet.go

@@ -6,7 +6,6 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
-	"time"
 
 	"github.com/spf13/cobra"
 
@@ -15,6 +14,7 @@ import (
 	"github.com/tendermint/tendermint/p2p"
 	"github.com/tendermint/tendermint/privval"
 	"github.com/tendermint/tendermint/types"
+	tmtime "github.com/tendermint/tendermint/types/time"
 )
 
 var (
@@ -112,7 +112,7 @@ func testnetFiles(cmd *cobra.Command, args []string) error {
 
 	// Generate genesis doc from generated validators
 	genDoc := &types.GenesisDoc{
-		GenesisTime: time.Now(),
+		GenesisTime: tmtime.Now(),
 		ChainID:     "chain-" + cmn.RandStr(6),
 		Validators:  genVals,
 	}