added floatingip
added associate_floatingip and disassosiate_floatingip mock test
update associate_floatingip for real
deleted update_floatingip and changed variable name from floating_network_id to floatingip_id.
fixed disassociate_floatingip bug and update floatingip-* mock values.
updated for ruby naming conventions.
deleted old files eg. floatingip.rb
[xenserver] added missing HostCpu model
[xenserver] added missing host_cpus attribute to Host model
[xenserver|tests] added HostCpu model tests
[xenserver|tests] typo fix
[xenserver|tests] test Host.host_cpus method
[xenserver] add missing Host attributes (edition, software_version)
[xenserver] replace #connection with #service in models

connection is now deprecated as per #1415, #1392
[rackspace|compute] updated rebuild to support passing additional options
Fix typo and use #get_header to handle mixed-case header keys
[rackspace|compute] added attach_volume method to server; cleaned up attachment model
Merge branch 'master' of github.com:fog/fog into volume_actions
Merge pull request #1456 from rbarazi/master

[AWS Storage] Fix typo and use #get_header to handle mixed-case header keys
Merge pull request #1453 from rubiojr/add-host-cpu-model

[xenserver] Added HostCpu model