If a bridge does not have a fail mode set, it returns nothing, i.e.
empty string.
This causes a failure when doing the want vs have compare in plays
where the fail-mode is missing, as we compare "" vs None respectively.
If a bridge does not have external_ids, ovs-vsctl returns '{}'.
This causes issues on the current want vs have comparison in cases
where the play does not define external_ids, as the comparison
is None vs '{}'.
Ok, so for openvswitch_db in particular we just return one command
but in the sake of consistency and code re-use, let's return a list
of "commands", even if it's just one.
The openvswitch_db module uses the ovs-vsctl binary to
address changes.
On other network modules we follow the pattern of returning 'commands'
as part of the result, containing the commands run on the target device.
Follow that for code consistency and maintenance.
Also, adding state param, which allows to add/remove keys on columns.
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
