Add capabilities option

This patch adds a capabilities option on swiftclient.
This option uses the new /info endpoint to request the
remote capabilities and nicely display it.

Change-Id: Ie34b454511d5527e402e66e1fdb72120f427f2fd
assertEquals is deprecated, use assertEqual

Change-Id: I226d9046d25d681beea60d38b029b71f9e6bf86c
Updated from global requirements

Change-Id: Icebd5bed50a50930bde0305191e32628d93348c0
Merge "Add capabilities option"
Merge "Updated from global requirements"
Merge "assertEquals is deprecated, use assertEqual"