Restore Nimbus Back To Life With Better Docs && Backups

## Objective
Use our current opportunity to improve **documentation** && **reliability** of Nimbus

## Key Result
- [ ] **Run through** the [MySQL setup documentation][wiki_docs] to deploy the MySQL server.
- [x] see if anyone has manual backups on their local machines
- [x] **Discuss** && **consider updating** the MySQL setup docs
- [x] **Recreate** the API VM instance on GCP
- [x] **Set up** snapshots on GCP to promote [**#reliability**](https://users.ece.cmu.edu/~koopman/des_s99/sw_reliability/)

## Details

* ??

[wiki_docs]: https://github.com/calpoly-csai/wiki/wiki/How-To-Install-and-Set-Up-a-Remote-MySQL-5.7-Database-and-Python-3.6-on-Ubuntu-18.04-with-Google-Cloud-Platform