This PS is mainly fixing SubDAGs timing issues when they
started along with main DAG and not at the time the main
DAG needs them. In Airflow 2.6.2 SubDAGs are deprecated
in favor of TaskGroups. So in this PS all SubDAGS were
replaced with TaskGroups.
Also task level logging config was extended by adding
py-console to obtain logs from tasks like it was
configured in Airflow 1.10.5.
Change-Id: I3f6d3961b1511e3b7cd2f7aab9810d033cfc14a3
99c2da745a