Add OpenCloud driver

[sagikazarmark]

Q	A
Bug?	no
New Feature?	yes
Links	Moved from bernardphp/bernard#266

[kynx]

Ack. Got to find some time to update the driver. I also want to remove the rackspace dep - that project is deprecated and afaik there’s no replacement :(

Good work on getting everything else split out 👍

[sagikazarmark]

No hurry, I just wanted to move driver related tickets here.