fix multilevel nesting

Description:

Fix for correct handling of multilevel nested properties

                        "NestedTest": {
                            "type": "nested",
                            "properties": {
                                "DateTimeTest": {
                                    "type": "date"
                                },
                                "NestedInnerTest": {
                                    "type": "nested",
                                    "properties": {
                                        "DateTimeInnerTest": {
                                            "type": "date"
                                        },
                                        "NumberInnerTest": {
                                            "type": "double"
                                        },
                                        "StringInnerTest": {
                                            "type": "text"
                                        }
                                    }
                                },

Also tag test case enabled int int-testing

Changes include:

• Refactor (a non-breaking change that improves code maintainability).
• Bugfix (a non-breaking change that solves an issue).
• New feature (a non-breaking change that adds functionality).
• Breaking change (a change that is not backward-compatible and/or changes current functionality).

Changes in:

• Common code
• GCP

Dev Checklist:

• Added Unit Tests, wherever applicable.
• Updated the Readme, if applicable.
• Existing Tests pass
• Verified functionality locally
• Self Reviewed my code for formatting and complex business logic.