Nightly Soak Test

[reaandrew]

From Slack:

How about this:

https://docs.travis-ci.com/user/cron-jobs/

Basically we could create ONE uber test which exercises EVERY feature of Corcel and use it for a soak test using travis nightly cron feature. The tests used actual plans, basically following the Acceptance Tests by actually invoking Corcel. They we create a stage in the .travis.yml file and set the schedule to nightly so we get those 8 hour tests we want.