allow to set password strength at user/group level

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>

internal/httpdtest/httpdtest.go

@@ -2450,6 +2450,9 @@ func compareBaseUserFilters(expected sdk.BaseUserFilters, actual sdk.BaseUserFil
 	if expected.PasswordExpiration != actual.PasswordExpiration {
 		return errors.New("password_expiration mismatch")
 	}
+	if expected.PasswordStrength != actual.PasswordStrength {
+		return errors.New("password_strength mismatch")
+	}
 	return nil
 }