OpenLineage: Add dag_id when generating run_id for task instance.

[kacpermuda]

We might get the same run_id for the corresponding tasks even though they come from different dags. This happens when two dags are almost identical (same task ids, same schedules).

F.e., in this case we have the same dag copied twice, but i changed the name of one of them. When we allow dags to run backfill, we will receive events from two dags, but the run_id for task events will be the same in both cases.

from airflow import DAG
from airflow.operators.bash import BashOperator
from airflow.utils.dates import days_ago

with DAG(
    dag_id='test',
    start_date=days_ago(2),
    schedule_interval="@daily",
    catchup=True
) as dag1:
    task1 = BashOperator(
        task_id='run',
        bash_command="echo 'test'; "
    )


with DAG(
    dag_id='test_1',
    start_date=days_ago(2),
    schedule_interval="@daily",
    catchup=True
) as dag2:
    task2 = BashOperator(
        task_id='run',
        bash_command="echo 'test'; "
    )

To fix that, I added a dag_id to the function that generates run_id for the task. I also added some macros tests and adjusted all other tests.

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