* New facts module for AWS EC2 VPC Endpoints
* ec2_vpc_endpoint_facts - meet latest Ansible standards
Fix exception syntax and use of `iteritems` for python3
Fix undefined `ec2` variable (should have been `connection`
Address various flake8 issues
Use `ansible_dict_to_boto3_filter_list` rather than
duplicating its implementation
* Remove max_items and next_token from vpc_endpoint_facts
max_items and next_token should be a module concern, not
a caller concern. It would be very difficult for a module
consumer to use next_token properly, whereas it's easy for
the module to handle it.
* ec2_vpc_endpoint_facts trivially supports check mode
Add supports_check_mode=True to the argument spec.
* Improve RETURN documentation for ec2_vpc_endpoint_facts
Fix bug in EXAMPLE documentation too
* fix return type for validate-modules
Toshio Kuratomi
Will Thames