Up puttygen build parallelism to 16.
Up puttygen build parallelism to 16.

dacut/hpc-lab-maker,dacut/aws-lab-cafe,dacut/hpc-lab-maker,dacut/aws-lab-cafe,dacut/hpc-lab-maker,dacut/aws-lab-cafe,dacut/aws-lab-cafe,dacut/hpc-lab-maker,dacut/hpc-lab-maker,dacut/aws-lab-cafe,dacut/aws-lab-cafe,dacut/hpc-lab-maker