Update images.js

Hi, there is a bug in Openstack where you cannot set the metadata of os_type as it is overwritten to None when first creating the image. This causes a problem with the timezone not being set correctly on windows machines. To solve this, I wrote a function, updateImageMeta, that allows a client to update the metadata of an image , after calling createImage function, and wanted to share it so maybe it will be in future versions of pkgcloud and help other people who might need this functionality as well.
Create meta-test.js
Create metaResponse.json
Update meta-test.js
Update images.js
Rackspace: Allow 403 for cdn uri. Resolves #298.
Merge branch 'master' into pr/251
Cleaning up artifacts from merging an old PR
Cleaning up meta-test code after PR
Merge pull request #299 from rossj/gh-298

Rackspace: Allow 403 for cdn uri. Resolves #298.
added in {name: db} object model to RS db users.js.  Added in separate functionality for database for backwards compatibility
Cleaning up tests for databases/createUser
[rackspace] first commit of adding static website' index page to storage provider' containers
[rackspace] added a static website test
Fixed misspelled word
Use updateContainerMetadata and removeContainerMetadata instead own request
Implemented error page definition
Add v1.0 support for openstack swift storage
Merge pull request #312 from ClouDesire/master

[V1.0] Add Basic Support for Rackspace Static Website
Remove utile requirement.