Document the ability to spin up test VMs

[sean-]

• [ ] 2 vCPU, 64GB, 1 dedicated disk
• [ ] 2 vCPU, 8GB
• [ ] 4 vCPU, 16GB
• [ ] 8 vCPU, 32GB
• [ ] 16 vCPU, 64GB
• [ ] 14 vCPU, 64GB, 3 dedicated disks
• [ ] 56 vCPU, 256GB, 12 dedicated disks
• [ ] 10 vCPU 128GB, 1 GPU
• [ ] 20 vCPU, 256GB, 2 GPU
• [ ] 80 vCPU, 1TB, 8 GPU

[sean-]

Partially addressed by joyent/mfsbsd@00fb29273252e5fabec897c0c7f8f670e5cf9601