These tests are doing string matches on the error condition. Update
them to match the new strings. This is probably okay to push out to old
releases even though it's technically backwards incompatible because
production playbooks won't be checking that a parameter was missing.
Param missing is something detected and fixed while writing the playbook.
Avoid the following seen when running ec2_ami tests on python3,
presumably because the return type of `map` is different between
python2 and python3.
```
Traceback (most recent call last):
File "/tmp/ansible_e44v27uj/ansible_module_ec2_snapshot_facts.py", line 242, in <module>
main()
File "/tmp/ansible_e44v27uj/ansible_module_ec2_snapshot_facts.py", line 238, in main
list_ec2_snapshots(connection, module)
File "/tmp/ansible_e44v27uj/ansible_module_ec2_snapshot_facts.py", line 193, in list_ec2_snapshots
snapshots = connection.describe_snapshots(SnapshotIds=snapshot_ids, OwnerIds=owner_ids, RestorableByUserIds=restorable_by_user_ids, Filters=filters)
File "/usr/local/lib/python3.5/dist-packages/botocore/client.py", line 312, in _api_call
return self._make_api_call(operation_name, kwargs)
File "/usr/local/lib/python3.5/dist-packages/botocore/client.py", line 575, in _make_api_call
api_params, operation_model, context=request_context)
File "/usr/local/lib/python3.5/dist-packages/botocore/client.py", line 630, in _convert_to_request_dict
api_params, operation_model)
File "/usr/local/lib/python3.5/dist-packages/botocore/validate.py", line 291, in serialize_to_request
raise ParamValidationError(report=report.generate_report())
botocore.exceptions.ParamValidationError: Parameter validation failed:
Invalid type for parameter OwnerIds, value: <map object at 0x7ff577511048>, type: <class 'map'>, valid types: <class 'list'>, <class 'tuple'>
```
https://github.com/ansible/ansible/pull/30435#issuecomment-330750498
Provide all necessary permissions for AMI tests
Allow tests to run in us-east-2
Ensure `always` section gets used
Update tests to ensure that cleanup works better, and add
deletion idempotency test
