Add share object api

[cesnietor]

This api returns an url presigned where you can get the object.
Request can be done on GET /api/v1/buckets/<bucket_name>/objects/share?prefix=<object_path>&version_id=<id>&expires=<amount+"ms|s|m|h>
Response payload example:

"http://localhost:9000/bucket2/file.txt?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=Y6T35RZKJC3FMZEJX5N7%2F20201020%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20201020T235640Z&X-Amz-Expires=30&X-Amz-Security-Token=eyJhbGciOiJIUzUxMiIsInR5cCI6IkpXVCJ9.eyJhY2Nlc3NLZXkiOiJZNlQzNVJaS0pDM0ZNWkVKWDVONyIsImV4cCI6MzYwMDAwMDAwMDAwMCwicG9saWN5IjoiY29uc29sZUFkbWluIn0.ajYkcnZUB8b4GmglmIp373h7oJw9q155xZ7Z7vktjqd-uJ_wsmR4XN6ATnO3evNcEm5dQN5v9v0EyRlcQTE6kg&X-Amz-SignedHeaders=host&versionId=be2e946b-fa54-4a7a-9d79-f2392e221585&X-Amz-Signature=1c800a1bcf0f23d6edd2f42346f304f8a437cb4cd2fff5ab6a3befad5d0bfadb"

How To Test:

As a logged in user, list objects on the desired bucket with version flag to get the object version that you want to download:

http://localhost:{{mcsport}}/api/v1/buckets/bucket2/objects?prefix=file.txt&with_versions=true

Then just do get as in the previous example e.g.:

http://localhost:{{mcsport}}/api/v1/buckets/bucket2/objects/share?prefix=file.txt&version_id=be2e946b-fa54-4a7a-9d79-f2392e221585&expires=30s

If expires flag not defined, will default to 7h, you can verify on response e.g....X-Amz-Expires=<duration>...

• Tests Included