Modify CBS weekly data collection script

[atalyaalon]

Modify CBS weekly data collection script
Current Airflow is here

• Add CBS data to an S3 bucket - create a repo for provider code and for each year.
• Import cbs data from email and upload to AWS - nowdays importmail process is running once a week and uploads to s3 data from last 2 cbs emails
• Trigger Load CBS data routinely, once a week
  command to delete a certain year and load starting that year, for example 2019:
  python main.py process cbs --source s3 --load_start_year=2019
  cbs parser is in file anyway/parsers/cbs/executor.py
  delete only data starting the year of the current files that arrived
• Create DB table versioning of emails we load from email to s3, and load new data to s3 ONLY when new email data arrives
• While loading data from email to s3, detect what years are loaded, and use the earliest year as load_start_year in the triggering of CBS loading. You may use an additional table.
• Modify schedule from weekly back to daily, since CBS data will be loaded only when a new email arrives (see this pr that changed from daily to weekly)

Note that CBS processes are now in anyway-etl repo - see process repo here