V-Ray for Blender was an open-source plugin that integrated Chaos Group's rendering engine into Blender, originally created by Andrei Izrantcev. RenderStreet supported V-Ray for Blender in the past, but the engine is no longer part of the farm.
If you are starting a new project, Blender's Cycles and EEVEE engines are fully supported: unlimited CPU rendering from $59.97/month on RenderStreet One, on-demand CPU from $3.00/server-hour, and GPU rendering on NVIDIA L40s at $4.49/server-hour. See the Blender render farm to get started.