Create separate Gemfile for Ruby 1.8.7
Update nokogiri dependency to version ~>1.5
[openstack|volume] support imageRef option

Volumes can be created with the imageRef option, which dictates which
image to base the volume off.
[openstack|compute] support block_device_mapping

Servers can be booted with block_device_mapping instead of image_id.
Add note about installing on Ruby 1.8.7 [ci skip]
[Openstack|volume] Add #get to volumes collection

This fixes reloading Volume objects and makes it consistent with other
collections.

Keeping find_by_id as an alias for compatibility.
Added rackspace monitoring with correct namespace

These files were merged from github.com/racker/rackspace-monitoring-rb. The
namespace was different than the convetion in fog so the namespace was modified
to be compliant with the rest of the fog library.
Fixed file path to adhere to fog mainline
Fixing namespace transition issue
[Openstack|volume] fix key name for volume_type

The cinder API uses volume_type instead of type.
removing coveralls support for Ruby 1.9.2 in hopes of fixing #1921
Add request/parser for DescribeOperableDBInstanceOptions
Return boolean, not index of match.
Add model, collection for instance_options
[Openstack|volume] create volumes from other vol.
Use correct filters in RDS model instance_options 'all' method
Cleanup and refactor digitalocean integration

* Handle case where droplet is locked pending events, DO support says
they are planning to expose something in the api to show these events.
Until then this is the best we have.
* Whitespace cleanup
* Refactor test helpers
* Use the collection helper for the digitalocean servers collection
Merge branch 'master' of github.com:fog/fog into coveralls_192
 removing coveralls support for Ruby 1.9.2 in hopes of fixing #1921 take two
try 3 in removing coveralls for ruby 1.9.2