add migrate old config

cmd/common_test.go

@@ -2,10 +2,6 @@ package cmd
 
 import "testing"
 
-func TestExecCommand(t *testing.T) {
-	t.Log(execCommand("echo test"))
-}
-
 func Test_printFailed(t *testing.T) {
 	t.Log(Err("test"))
 }

cmd/version.go

@@ -27,5 +27,4 @@ func showVersion() {
 	fmt.Printf("%s %s (%s) \n", codename, version, intro)
 	// Warning
 	fmt.Println(Warn("This version need V2board version >= 1.7.0."))
-	fmt.Println(Warn("This version changed config file. Please check config file before running."))
 }