Test deletion of all data from cc-node and MongoDB

[tfwoodroofMCS]

• [x] @yonasbek to test this locally.
• [x] If this works, delete on production and apply migration scripts to recreate test users.
• [x] @tfwoodroofMCS contact Abe and let him know there are test users available and that we can confidently clear out the database before the 25th.