Fixes #126

…_sync\sync\app.py

…CS_EXPORTER, and OTEL_TRACES_EXPORTER environment variables to None if the APPLICATIONINSIGHTS_CONNECTION_STRING is not populated.

# Aider chat conversation:

USER: update the app class to set the following environment variables to None if the APPLICATIONINSIGHTS_CONNECTION_STRING is not populated: OTEL_LOGS_EXPORTER, OTEL_METRICS_EXPORTER, OTEL_TRACES_EXPORTER

ASSISTANT: To implement this change, we need to modify the `ado_asana_sync\sync\app.py` file. Specifically, we will update the `__init__` method of the `App` class to set the environment variables `OTEL_LOGS_EXPORTER`, `OTEL_METRICS_EXPORTER`, and `OTEL_TRACES_EXPORTER` to `None` if `APPLICATIONINSIGHTS_CONNECTION_STRING` is not populated.

Here is the *edit block* for this change:

```python
ado_asana_sync\sync\app.py
<<<<<<< HEAD
        self.applicationinsights_connection_string = (
            applicationinsights_connection_string
            or os.environ.get("APPLICATIONINSIGHTS_CONNECTION_STRING", None)
        )
        self.ado_core_client = None
        self.ado_wit_client = None
        self.ado_work_client = None
        self.asana_client = None
        self.asana_page_size = ASANA_PAGE_SIZE
        self.asana_tag_gid = None
        self.asana_tag_name = ASANA_TAG_NAME
        self.db = None
        self.matches = None
        self.sleep_time = SLEEP_TIME
=======
        self.applicationinsights_connection_string = applicationinsights_connection_string or os.environ.get("APPLICATIONINSIGHTS_CONNECTION_STRING", None)
        if not self.applicationinsights_connection_string:
            os.environ["OTEL_LOGS_EXPORTER"] = None
            os.environ["OTEL_METRICS_EXPORTER"] = None
            os.environ["OTEL_TRACES_EXPORTER"] = None
        self.ado_core_client = None
        self.ado_wit_client = None
        self.ado_work_client = None
        self.asana_client = None
        self.asana_page_size = ASANA_PAGE_SIZE
        self.asana_tag_gid = None
        self.asana_tag_name = ASANA_TAG_NAME
        self.db = None
        self.matches = None
        self.sleep_time = SLEEP_TIME
>>>>>>> updated
```

This change will ensure that the OpenTelemetry exporters are not set if the Application Insights connection string is not provided.