Adding more options for access control on containers(directories)

[Marthyn]

While implementing this library i came upon a missing feature, for a container you can set a lot more options than just public or not public, as stated here: https://docs.openstack.org/developer/swift/overview_acl.html.

My suggestion would be to add more options like :referer to https://github.com/fog/fog-openstack/blob/4217d76368aa0c570b268e96a3cf21f760ccc967/lib/fog/storage/openstack/requests/put_container.rb

Meaning i would create a PR, just opening this issue to verify if that's the proper way to go.

[Carthaca]

Hi Marthyn,

your suggestion sounds fine, a PR is the way to go 👍

Cheers, Maurice