The root cause for the authentication error is that the portal
was not decrypting the user secret key before signing requests.
This is solved via the following:
1. Update VinylDNS controller to decrypt user secret when needed
1. Make sure that the `encrypt-user-secrets` feature flag is `on`
in the API reference.conf. This was why in testing locally we
did not hit the same issue that we saw in the development environment.
Because the flag was false, test users secrets were not encrypted.
* `portal application.conf` - set the crypto to match the API
* `Dependencies.scala` - eliminate some duplication of dependencies
* `api reference.conf` - set the encrypt-user-secrets flag to true
* `TestApplicationData.scala` - modify the mock play app to have a
CryptoAlgebra binding
* `VinylDNS` - add secret decryption in getUserCreds and processCSV
* `VinylDNSModule` - add binding for CryptoAlgebra for dependency
injection.
Replace the repos in the portal with dynamodb and core
* Remove all data stores from the portal
* Use the user and user change repository from core and dynamodb
* Remove the UserAccount type, use core User instead
* Remove the UserChangeLog types, use core UserChange instead
* Clean up duplication in VinylDNS
* Moved `Module` to `modules.VinylDNSModule`. The reason is that
you cannot disable the "default" module for unit tests.
* Use mock configuration for VinylDNSSpec and FrontendControllerSpec.
The mock app configuration is what allows us to run without dynamodb
* Added a TestApplicationData trait to cut down on duplication
