purge_subnets|routes were introduced recently.
ensure_subnet_associations now takes purge_subnets as a parameter. A
call to this function was missed when introducing this feature. With
out, results in a "got 5 expected 6" error.
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
* Disassociate subnets from route tables before deletion
If a route table still has subnets associated with it, it will fail
to delete:
```
"msg": "The routeTable 'rtb-abcd1234' has dependencies and cannot be deleted."
```
Avoid this by disassociating subnets before route table deletion
* Fix ec2_vpc_route_table flake8 complaints
Sloane Hertel
Shaun Brady
Toshio Kuratomi
Kamil Cholewiński
Stepan Stipl
Matt Martz
Will Thames
Andrea Tartaglia
James Cammarata