Clean up App Provisioning

[isaacrlevin]

The provisioning of the app takes place in a bootstrap container. The container runs the following (for example):

https://github.com/microsoft/ignite-learning-paths-training-ops/blob/main/deployment/deploy.sh

which does a whole host of tasks including pre-loading the db, etc.

The actions for this script should instead be performed now in a ARM script action.

Also, the ARM templates include hardcoded regions