Remove the mime type validation since the part handler type allows for
custom types.
http://cloudinit.readthedocs.org/en/latest/topics/format.html#part-handler
The docs specify that if a part handler type is specified, one could use
custom mime types
Signed-off-by: Simon Thulbourn <simon+github@thulbourn.com>
This adds a new resource to template to generate multipart cloudinit
configurations to be used with other providers/resources.
The resource has the ability gzip and base64 encode the parts.
Simon Thulbourn