Remove the OpenStack API cache busting.

Not sure why this was ever here, and I cannot find a reason to continuously bust
the Nova request caching in the wsgi request handler. It does not help
performance, and makes attempts at ANY caching of responses to a Fog request
annoying.
[openstack|volume] Added quota requests for Cinder
issue #1275 removed rspec requires - tests pass
Fix typo in method name for DynamoDB::Mock#setup_credentials
Merge pull request #1788 from jfraser/master

Fix typo in method name for DynamoDB::Mock#setup_credentials
Merge branch 'master' of git://github.com/fog/fog
[docs::aws::rds] converted formatting from RDoc to YARD
[Brightbox] Updates image selector for name format

Brightbox is now moving to using the default Ubuntu Cloud Images
(http://cloud-images.ubuntu.com/) where we are also using the naming
convention used there.

So the image selector has been updated to select the latest version of
Ubuntu (i386, official Brightbox) image if no image is specified with
the new format.
Merge pull request #1793 from fog/brightbox_image_selector

[Brightbox] Updates image selector for name format
[Docs] Fixes assorted yardoc tagging issues

This fixes some incorrect tag names and type/name ordering
Merge pull request #1789 from westonplatter/master

issue #1275 remove specs & converted YARD format
Merge pull request #1752 from pmdeazeta/openstack/volume

[openstack|volume] Added quota requests for Cinder
Merge pull request #1693 from amerine/remove_openstack_cache_busting

Remove the OpenStack API cache busting.