Some bug fix + Scaleway comput instances

[da-ekchajzer]

Feature :

• https://github.com/Boavizta/boaviztapi/issues/228

Fixes :

• https://github.com/Boavizta/boaviztapi/issues/330
• https://github.com/Boavizta/boaviztapi/issues/285
• https://github.com/Boavizta/boaviztapi/issues/284
• /v1/cloud/instance 404 error message

[da-ekchajzer]

@bpetit could you check the azure file to be sure i only removed duplicated item (i did it with panda drop_duplicates)