(PTFE-2629) Add backend for scaleway (#706)

### Purpose

Add scaleway backend to runner-manager

Author: matthiasL-scality

poetry.lock

@@ -29,6 +29,7 @@ pyvmomi = "^8.0.3.0.1"
 vapi-runtime = { url = "https://raw.githubusercontent.com/vmware/vsphere-automation-sdk-python/v8.0.1.0/lib/vapi-runtime/vapi_runtime-2.40.0-py2.py3-none-any.whl" }
 vcenter-bindings = { url = "https://raw.githubusercontent.com/vmware/vsphere-automation-sdk-python/v8.0.1.0/lib/vcenter-bindings/vcenter_bindings-4.1.0-py2.py3-none-any.whl" }
 prometheus-client = "^0.21.0"
+scaleway = "^2.10.0"
 
 
 [tool.poetry.group.docs]