Figure out a way to adapt to Heroku changes

**Current Behavior**
Heroku may change the port or url a certain resource is on, for example the Redis server can change.
This causes our indexer to fail because our indexer runs outside of heroku and in its own VPS.

**Expected Behavior**
All of our services that are external to Heroku should adapt to changes from inside Heroku.
At the moment, that means our VPS services should restart with new environment variables when heroku resources change.

Is there a Heroku webhook that we can use to notify us of changes?