Optional parameters 'limit' and 'marker' were added to the GET
/os-simple-tenant-usage and GET os-simple-tenant-usage/{tenant_id}
endpoints.
/os-simple-tenant-usage?limit={limit}&marker={instance_uuid}
/os-simple-tenant-usage/{tenant_id}?limit={limit}&marker={instance_uuid}
Implements blueprint paginate-simple-tenant-usage
Change-Id: I9e96d31ede323f1c2aed4271a4fcab720cc9507b