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
* Update validate-modules
* Validates ANSIBLE_METADATA
* Ensures imports happen after documentation vars
* Some pep8 cleanup
* Clean up some left over unneeded code
* Update modules for new module guidelines and validate-modules checks
* Update imports for ec2_vpc_route_table and ec2_vpc_nat_gateway
* Change example syntax on supervisorctl module
* Change example syntax or _ec2_ami_search module
* Change example syntax on cloudformation module
* Change example syntax on ec2 module
* Change example syntax on ec2_facts module
* Change example syntax on ec2_eip module
* Change example syntax on rds module
* Change example syntax on route53 module
* Change example syntax on s3 module
* Change example syntax on digital_ocean module
* Change example syntax on docker_service module
* Change example syntax on cloudformation module
* Change example syntax on gc_storage module
* Change example syntax on gce module
* Change example syntax on gce_mig module
* Change example syntax on _glance_image module
* Change example syntax on _keystone_user module
* Change example syntax on _nova_keypair module
* Change example syntax on _quantum_floating module
* Change example syntax on _quantum_floating_ip_associate module
* Change example syntax on _quantum_network module
* Change example syntax on _quantum_router module
* Change example syntax on _quantum_router_gateway module
* Change example syntax on _quantum_router_interface module
* Change example syntax on _quantum_subnet module
* SQUASH _quantum_subnet
* Add missing quotes
There are a completely new set of modules that do all of the things like
keystone v3 and auth_plugins and the like correctly. Structurally
upgrading these would have been massively disruptive and there is no
real good way to do so without breaking people.
These modules should be kept around for several releases - they still
work for people - and they should get bug fixes. But they should not
take new features. New features should go to the os_ modules.