[rackspace|queues] Addition of Rackspace Cloud Queues
[rackspace|queues] Fixed some PR comments;  Pass more information to underlying exceptions
[rackspace|queues] Added :rackspace_queues_client_id to tests to make it easier to run; Couple other PR tweaks
[rackspace|queues] fixed broken tests
refactors get_object_https_url request, adds temp_signed_url method to file class
adapts aws method signatures for temp url generation
refactors create_temp_url method to use the options hash for schemes instead of a parameter
[rackspace|queueing] Cleaned up tests and authentication logic
adds object tests for get_http_url, get_https_url
support retrieving edge gateway status
ensuring tests are good for empty orgs and are skipped when mocking
Mocks for get_edge_gateways & get edge gateway
[vcloud_director] Implement get*_metadata_item requests.
Merge pull request #2206 from anynines/openstack_temp_url_support

Openstack provider: Temp url support for Files
Merge pull request #2232 from nosborn/vcloud_director_requests

[vcloud_director] Implement get*_metadata_item requests.
Merge pull request #2228 from alphagov/vcloud-director_edge-gateway_support

[vcloud_director] Getting Edge Gateways details
Merge pull request #2095 from brianhartsock/rackspace_cloud_queues

[rackspace|queues] Addition of Rackspace Cloud Queues