In order to authenticate with the Scaleway API for the contrib dynamic
inventory Scaleway the environment variable SCALEWAY_TOKEN was read
only if a value was set in the configuration .ini file.
This PR fixes that allowing to read only the environment variable
without needing to set a token in the configuration file.
Closes#35693
provider
Provides a dynamic inventory plugin for Scaleway cloud provider with
the following features:
- Configurable scaleway.ini file
- Cache API responses
- Choose public or private IPs
- Create groups per Scaleway 'tags'
- Create groups per Scaleway regions
