Updated OSDSpec

Signed-off-by: nkef <nkef@ait.edu.gr>
Updated osdspec model
Removed unnecessary dependences
Updated dependencies, removed client, created register

Signed-off-by: nkef <nkef@ait.edu.gr>
Created client UI, created register client, created client from console

Signed-off-by: nkef <nkef@ait.edu.gr>