Also perform pep8 cleanup on existing gandi compute tests.

Add new DNS driver for Gandi.net provider.

Also perform pep8 cleanup on the existing compute driver tests.

Contributed by John Carr, part of LIBCLOUD-281.


git-svn-id: https://svn.apache.org/repos/asf/libcloud/trunk@1440817 13f79535-47bb-0310-9956-ffa450edef68