Migrate search_satisfaction DAG

This one requires files from other repos:

• repos/search-platform/discolytics!20 (merged)
• search_satisfaction_spec.json.template currently found in discovery/analytics (gerrit) which could be moved to analytics/refinery (gerrit)

Further, HdfsToDruidOperator depends on DruidHook, that is not part of the dependencies, adding it to setup.cfg did not do the trick. I assume it has to become part of wmf_airflow_dags-0.1.0.zip somehow.

Bug: T329872