A job to fill/update tblSpotifyHotHitsPlaylistTrackSummary table that contains aggregated track to hot hits playlists entries history.

This job:
1. Uses hot hits playlists table to delete/insert history for missing/excess playlists:
  remove excess rows (of non hot hits playlists),
  copy history data for new hot hits to S3,
  use Athena to aggregate this data,  
  download it back to MySQL.  
2. Uses old history to update aggregated data for hot hits playlists:  
  copy today history to temp table,  
  do inserts and updates.  

Main environment variables:  
MYSQL_DATABASE - MySQL database name  
MYSQL_USER - MySQL user name  
MYSQL_PASSWORD - MySQL password  
MYSQL_HOST - MySQL host URI  
REDIS_HOST - Redis host URI  
S3_BUCKET - S3 bucket name, it is used as Athena data source