[rackspace|identity] fixing broken identity tests
[rackspace] updated services to re-authenticate when authentication token expires.
[rackspace|dns] fixing broken tests
merging with master
[rackspace] adding block and parse_json parameters to request parameter calls
[rackspace|cdn] updating cdn to throw exceptions from storage namespace rather than cdn. This was done for historical reasons.
Merge branch 'master' of github.com:fog/fog into reauth
Merge branch 'master' of github.com:fog/fog into reauth
Infer the 'image' URL correctly when inserting a server.

When inserting (creating) a new server, using a private (project
specific) image, the code would infer the resource URI for the
image incorrectly, because it would try to find the image in the
current project using an incorrect method to access the name of
the project. This patch fixes the variable reference, and changes
the loop logic to try all known project names in the same fashion.

Refs #1933
Merge pull request #1939 from rackspace/reauth

[rackspace] Reauthenticate and retry request when authentication token expires
Merge branch 'fix_google_insert_server' of https://github.com/maginatics/fog into maginatics-fix_google_insert_server
small style tweaks for #1946
[google|compute] Fix some bugs with using create without bootstrap.
Use correct filters in model snapshots 'all' method