##### SUMMARY
Add a small helper to validate parameters while executing the module.
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Co-authored-by: Justin Jeffery <justin.jeffery@ipfabric.io>
##### SUMMARY
Make the api endpoint module argument consistent with the api token.
- Renamed the `endpoint` module argument to `api_endpoint`, backward
compatibility is maintained using an alias.
- Allow to configure it using the `HCLOUD_ENDPOINT` env var.
This makes the inventory config and the modules config a bit more
consistent.
##### ISSUE TYPE
- Feature Pull Request
