* Remove boto usage from boto3 modules
* Remove region checking
boto3_conn now takes care of region checking and handles NoRegionError
exceptions with a standard message
boto3_conn also takes care of other connection exceptions too.
* Document boto3 as a requirement for ec2_eni_facts
* ec2_ami_copy.py: Fix WaiterError handling.
Change suggested by Adam Johnson at https://github.com/ansible/ansible/issues/26971
* ec2_ami_copy.py: WaiterError: fail_json: add exception parameter.
* ec2_ami_copy.py: import traceback
Set encrypted to default False, rather than None
Otherwise you get:
```
Invalid type for parameter Encrypted, value: None, type: <type 'NoneType'>, valid types: <type 'bool'>)
```
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