[client] Added Stix ID to Label (#216)

* [client] Added standard_id to label graphql properties

* [tests] Added crud read verification for the presence of the standard_id (Stix ID field)

Author: nor3th

pycti/entities/opencti_label.py

@@ -12,6 +12,7 @@ def __init__(self, opencti):
             color
             created_at
             updated_at
+            standard_id
         """
 
     """

tests/02-integration/entities/test_entity_crud.py

@@ -25,6 +25,7 @@ def test_read(entity_class):
     test_indicator = entity_class.own_class().create(**class_data)
     assert test_indicator is not None, "Response is NoneType"
     assert "id" in test_indicator, "No ID on object"
+    assert "standard_id" in test_indicator, "No standard_id (STIX ID) on object"
     test_indicator = entity_class.own_class().read(id=test_indicator["id"])
     compare_values(
         class_data,