Update cloud.gov manifest setup in CMS

[ccostino]

Manifest inheritance has been deprecated in Cloud Foundry in favor of another type of setup using something called a YAML anchor.

Instead of inheriting manifest files from each other, you declare a defaults section in your manifest file that other sections then reference. Unfortunately what this means for us is increased duplication since we have separate manifests for each space, but we want to make sure this is accounted for before the manifest inheritance is just shut off completely on us (this change happened about a year ago).

To update the API we'll have to do the following:

• Copy everything in the base manifest file to their respective manifest files for each space
• Make sure each manifest file for each space still works as expected

[AmyKort]

@patphongs

[AmyKort]

Merged, so closing.