Merge PR #3887: Add indent to prompt of gaiacli tx send

* Add indent to prompt of `gaiacli tx send`.
* Add indent to prompt of `gaiacli tx send` with flag --indent.

client/utils/utils.go

@@ -3,6 +3,7 @@ package utils
 import (
 	"bytes"
 	"fmt"
+	"github.com/spf13/viper"
 	"io/ioutil"
 	"os"
 
@@ -69,7 +70,16 @@ func CompleteAndBroadcastTxCLI(txBldr authtxb.TxBuilder, cliCtx context.CLIConte
 			return err
 		}
 
-		fmt.Fprintf(os.Stderr, "%s\n\n", cliCtx.Codec.MustMarshalJSON(stdSignMsg))
+		var json []byte
+		if viper.GetBool(client.FlagIndentResponse) {
+			json, err = cliCtx.Codec.MarshalJSONIndent(stdSignMsg, "", "  ")
+			if err != nil {
+				panic(err)
+			}
+		} else {
+			json = cliCtx.Codec.MustMarshalJSON(stdSignMsg)
+		}
+		fmt.Fprintf(os.Stderr, "%s\n\n", json)
 
 		buf := client.BufferStdin()
 		ok, err := client.GetConfirmation("confirm transaction before signing and broadcasting", buf)