Add support for new Scaleway Regions

[rozhok]

pl-waw region is not supported for Scaleway auto-discovery

API endpoints in Scaleway provider are obsolete. New endpoints should be used, and regions check should include new regions.
List of new enpoints:

• https://api.scaleway.com/instance/v1/zones/fr-par-1
• https://api.scaleway.com/instance/v1/zones/fr-par-2
• https://api.scaleway.com/instance/v1/zones/nl-ams-1
• https://api.scaleway.com/instance/v1/zones/pl-waw-1

[rozhok]

Looks like #164 already provides fix