Fix api stream

[jowlee]

Trello Card Link

https://trello.com/c/dZ5hN7kg/1453-api-v1-tracks-trackid-stream-is-broken

Description

Caching a 302 redirect response for Discovery Provider's /v1 api was broken.

Services

Discovery Provider

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide repro instructions & any configuration.
Include log analysis if applicable.

1. Hit any /v1 API endpoint
2. Hit the same endpoint again within 5 seconds to get the cached response
3. Hit the /v1/tracks/<track_id>/stream endpoint
4. Hit the /v1/tracks/<track_id>/stream endpoint again within 5 seconds to get the cached response

Please list the unit test(s) you added to verify your changes.

1. Unit test to check the the correct transform function was being used and the the cached responses exist in redis before the timeout and do not exist after the timeout.

[raymondjacobson]

Awesome test

[raymondjacobson]

Looks good to me other than the lint error :-)

[piazzatron]

Rad 👍

I feel like in general maybe it's a better practice to break up longer tests like this into multiple smaller tests for maintainability, but I'm fine with this as it is