fog/fog — pull request #1184 by wijet (2012-10-01 12:04:49+00:00)
Title: Added support for scheduler hints in OpenStack

Added support for openstack scheduler hints when creating new servers.

http://docs.openstack.org/trunk/openstack-compute/admin/content/scheduler-filters.html

Usage:

```ruby
openstack.servers.create(
name: 'abc',
image_ref: '123',
flavor_ref: 'ab-1',
os_scheduler_hints: {different_host: ['id1', 'id2'] }
)
```