**Apache Airflow version**:

2.1.0

**Environment**:

- self hosted docker-compose based stack

**What happened**:

Using JDBCOperator if the sql result in an error we got only 
```
[2021-06-21 11:05:55,377] {local_task_job.py:151} INFO - Task exited with return code 1
```

Before upgrading from 2.0.1 we got error details in logs:
```
jaydebeapi.DatabaseError: java.sql.SQLException:... [MapR][DrillJDBCDriver](500165) Query execution error. Details: VALIDATION ERROR:...
``` 

**What you expected to happen**:

See `SQLException` in logs

**How to reproduce it**:

Perform a generic SQL task with broken SQL.

**Anything else we need to know**:

I think is somehow related to https://github.com/apache/airflow/commit/abcd48731303d9e141bdc94acc2db46d73ccbe12#diff-4fd3febb74d94b2953bf5e9b4a981b617949195f83d96f4a589c3078085959b7R202 
airflow/models/taskinstance.py
'params': params,
            'prev_ds': prev_ds,
            'prev_ds_nodash': prev_ds_nodash,
            'prev_execution_date': prev_execution_date,
            'prev_execution_date_success': lazy_object_proxy.Proxy(
                lambda: self.get_previous_execution_date(state=State.SUCCESS)
            ),
            'prev_start_date_success': lazy_object_proxy.Proxy(
                lambda: self.get_previous_start_date(state=State.SUCCESS)
            ),
            'run_id': run_id,
            'task': task,
            'task_instance': self,
            'task_instance_key_str': ti_key_str,
            'test_mode': self.test_mode,
            'ti': self,
            'tomorrow_ds': tomorrow_ds,
            'tomorrow_ds_nodash': tomorrow_ds_nodash,
            'ts': ts,
            'ts_nodash': ts_nodash,
            'ts_nodash_with_tz': ts_nodash_with_tz,
            'var': {
                'json': VariableJsonAccessor(),
                'value': VariableAccessor(),
            },
            'conn': ConnectionAccessor(),
            'yesterday_ds': yesterday_ds,
            'yesterday_ds_nodash': yesterday_ds_nodash,
        }
    def get_rendered_template_fields(self):