Add tests for CDN infra
Add tests for CDN infra

Add tests for:

* /media/* urls
* locale redirects and vary headers
* geolocation

pascalchevrel/bedrock,MichaelKohler/bedrock,MichaelKohler/bedrock,MichaelKohler/bedrock,alexgibson/bedrock,flodolo/bedrock,sylvestre/bedrock,alexgibson/bedrock,sylvestre/bedrock,craigcook/bedrock,pascalchevrel/bedrock,MichaelKohler/bedrock,craigcook/bedrock,mozilla/bedrock,sylvestre/bedrock,mozilla/bedrock,pascalchevrel/bedrock,mozilla/bedrock,flodolo/bedrock,craigcook/bedrock,mozilla/bedrock,alexgibson/bedrock,sylvestre/bedrock,craigcook/bedrock,flodolo/bedrock,alexgibson/bedrock,pascalchevrel/bedrock,flodolo/bedrock