Add option to wait for RackConnect automation

Add option to wait for RackConnect automation to complete. This option refreshes the accessIPv4 attribute after waiting for the RC metadata fields to be updated to say 'DEPLOYED'. It also had to set :no_passwd_lock to true, as fog's rackspace compute provider (by default) locks the root account on a new server. See https://github.com/fog/fog/blob/27eec8700f4b6b990442bc9715dc27edc6b47a66/lib/fog/rackspace/models/compute_v2/servers.rb#L30-L31 for more information on that.
Ignore class length for now, per @RoboticCheese
Merge pull request #35 from martinb3/add_rackconnect_wait

Add option to wait for RackConnect automation
Drop support for Ruby 1.9.2
Bump version for release
Bump version for dev
Add CentOS 7 to image list
Merge pull request #36 from hhoover/centos7

Add CentOS 7 to image list
Do a fresh image ID dump
Merge pull request #37 from test-kitchen/roboticcheese/update-image-data

Do a fresh image ID dump
Bump version for release
Bump version for dev