Add TimeIotaMs to export GenesisFile (#6510)

* Add TimeIotaMs to export GenesisFile.

* include changelog entry

* Fix changelog.

* add test for exporting consensus params

Co-authored-by: Alexander Bezobchuk <alexanderbez@users.noreply.github.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

server/export.go

@@ -75,8 +75,9 @@ func ExportCmd(ctx *Context, cdc codec.JSONMarshaler, appExporter AppExporter) *
 			doc.Validators = validators
 			doc.ConsensusParams = &tmtypes.ConsensusParams{
 				Block: tmtypes.BlockParams{
-					MaxBytes: cp.Block.MaxBytes,
-					MaxGas:   cp.Block.MaxGas,
+					MaxBytes:   cp.Block.MaxBytes,
+					MaxGas:     cp.Block.MaxGas,
+					TimeIotaMs: doc.ConsensusParams.Block.TimeIotaMs,
 				},
 				Evidence: tmtypes.EvidenceParams{
 					MaxAgeNumBlocks: cp.Evidence.MaxAgeNumBlocks,
@@ -92,7 +93,7 @@ func ExportCmd(ctx *Context, cdc codec.JSONMarshaler, appExporter AppExporter) *
 				return err
 			}
 
-			fmt.Println(string(sdk.MustSortJSON(encoded)))
+			cmd.Println(string(sdk.MustSortJSON(encoded)))
 			return nil
 		},
 	}
@@ -100,6 +101,8 @@ func ExportCmd(ctx *Context, cdc codec.JSONMarshaler, appExporter AppExporter) *
 	cmd.Flags().Int64(flagHeight, -1, "Export state from a particular height (-1 means latest height)")
 	cmd.Flags().Bool(flagForZeroHeight, false, "Export state to start at height zero (perform preproccessing)")
 	cmd.Flags().StringSlice(flagJailWhitelist, []string{}, "List of validators to not jail state export")
+	cmd.SetOut(cmd.OutOrStdout())
+	cmd.SetErr(cmd.OutOrStderr())
 
 	return cmd
 }