bump fog ver to latest release; >= 1.22.0 is needed for user_data support
support user_data and config_drive options
Update vagrant to allow users to specify non-standard images and flavors.
Merge pull request #101 from rackspace/support_unlisted

Update vagrant to allow users to specify non-standard images and flavors
indicate only major/minor in fog version, so point releases can be
picked up automatically
Merge pull request #100 from michaelsbradleyjr/user-data

support "user_data" and "config_drive" configuration options