[FEATURE] - Update remote Cache-Control directives.

[arnoschoon]

If a new file is added or the metadata indexer is triggered update the metadata of the remote S3 object. This allows you to set cache control directives like max-age for specific file types.

Processed files are updated by monitoring the resource storage, since the filenames contain some kind of identifier the max-age in the dummy configuration is set to one week.

[arnoschoon]

• https://d2k5lzldc8s7dy.cloudfront.net/user_upload/pdf/test/csm_iStock_000076270139_Full_101b112c70.jpg
• https://d2k5lzldc8s7dy.cloudfront.net/_processed_/3/5/preview_csm_iStock_000076270139_Full_101b112c70_6f3a686318.jpg

[Tuurlijk]

Code looks good, but I miss the 'all tests are green' trigger.