Update hpfog 0.0.19 to upstream fog 1.9.0

Merge the latest code from fog 1.9.0 release. Sync up with latest HP Fog providers (hpfog v0.0.19) release.

Add BlockStorage provider, add volumes and snapshots support. Add support for bootable volumes, persistent servers, cross-tenant acls and temp urls. Add support for Windows instances. See CHANGELOG.hp for details.