Changes to the metadata format were approved here:
https://github.com/ansible/proposals/issues/54
* Update documentation to the new metadata format
* Changes to metadata-tool to account for new metadata
* Add GPL license header
* Add upgrade subcommand to upgrade metadata version
* Change default metadata to the new format
* Fix exclusion of non-modules from the metadata report
* Fix ansible-doc for new module metadata
* Exclude metadata version from ansible-doc output
* Fix website docs generation for the new metadata
* Update metadata schema in valiate-modules test
* Update the metadata in all modules to the new version
* Change example syntax on os_auth module
* Change example syntax on os_client_config module
* Change example syntax on os_image_facts module
* Change example syntax on os_networks_facts module
* Change example syntax on os_nova_flavor module
* Change example syntax on os_object module
* Change example syntax on os_server module
* Change example syntax on os_subnet_facts module
* Change example syntax on rax_files module
* Change example syntax on rax_files_objects module
* Change example syntax on mysql_db module
* Change example syntax on file module
* Change example syntax on uri module
* Change example syntax on cl_bond module
* Change example syntax on cl_bridge module
* Change example syntax on cl_img_install module
* Change example syntax on cl_interface module
* Change example syntax on cl_license module
* Change example syntax on cl_ports module
* Remove trailing colon
Otherwise CDN (Akamai) downloads file without the headers. The sequence
is following:
1. Ansible uploads file to CF.
2. Akamai downloads the file and caches it in CDN.
3. Ansible sets headers.
As a result Akamai serves file without headers.
This is backwards incompatible change, because headers keys are not
prefixed with `x-object-meta-`. Which allows user to set headers like
`Access-Control-Allow-Origin`.