Implemented changes to use image_os_type option values windows/linux instead of windows/other and raise error if image_os_type value is other than windows/linux
Implemented review comments to use set_image_os_type
Merge remote-tracking branch 'origin/sprint87-merged' into sid-oc-9368-openstack-issues
Updated rspec tests
Updated rspec tests for server create
Merge pull request #26 from opscode/sid-oc-9368-openstack-issues

OC-9368 Image_os_type option should be compulsory in knife-openstack.