Merge branch 'master' into release-3.4

dao/src/main/java/org/thingsboard/server/dao/service/ConstraintValidator.java

@@ -53,8 +53,13 @@ public class ConstraintValidator {
     public static List<String> getConstraintsViolations(Object data) {
         return fieldsValidator.validate(data).stream()
                 .map(constraintViolation -> {
-                    Path propertyPath = constraintViolation.getPropertyPath();
-                    String property = Iterators.getLast(propertyPath.iterator()).toString();
+                    String property;
+                    if (constraintViolation.getConstraintDescriptor().getAttributes().containsKey("fieldName")) {
+                        property = constraintViolation.getConstraintDescriptor().getAttributes().get("fieldName").toString();
+                    } else {
+                        Path propertyPath = constraintViolation.getPropertyPath();
+                        property = Iterators.getLast(propertyPath.iterator()).toString();
+                    }
                     return property + " " + constraintViolation.getMessage();
                 })
                 .distinct()