[WIP] Several usability changes to the salt formulas

[palnabarun]

The following is a non-exhaustive list of what should be done:

• SSL should be on always
• Consolidate the nginx configurations wherever necessary
• Install certbot and setup the cronjob using salt (Did manually now)
• Upgrade deprecated packages
  • Postgres 9.6 -> Postgres -> 12.2
  • Python 2.7 -> Python 3.7 (at least)
  • ...To be updated...
• Create a non root user with passwordless sudo to perform all actions
• Refactor salt formulas to work with non-root user

[palnabarun]

The above can also serve as ideas for the Devsprint.

[ananyo2012]

@palnabarun You should have created an issue with the checklist

[palnabarun]

I started working on the issues long back when we got access to the server.

Feel free to create an issue with the tasks, but the list will keep on changing.