* docs/digitalocean: Adding an import section to the bottom of the DO
importable resources
* docs/azurerm: Adding the Import sections for the AzureRM Importable resources
* docs/aws: Adding the import sections to the AWS provider pages
This resource is the first which makes use of the new Riviera library
(at https://github.com/jen20/riviera), so there is some additional set
up work to add the provider to the client which gets passed among
resources.