fix(configtest,scan): support SSH config file (#1388)

* fix(configtest,scan): support SSH config file

* chore(subcmds): remove askKeyPassword flag

subcmds/util.go

@@ -1,29 +1,12 @@
 package subcmds
 
 import (
-	"fmt"
 	"os"
 	"path/filepath"
 
-	"github.com/howeyc/gopass"
 	homedir "github.com/mitchellh/go-homedir"
-	"golang.org/x/xerrors"
 )
 
-func getPasswd(prompt string) (string, error) {
-	for {
-		fmt.Print(prompt)
-		pass, err := gopass.GetPasswdMasked()
-		if err != nil {
-			return "", xerrors.New("Failed to read a password")
-		}
-		if 0 < len(pass) {
-			return string(pass), nil
-		}
-	}
-
-}
-
 func mkdirDotVuls() error {
 	home, err := homedir.Dir()
 	if err != nil {