Fix syntax errors in labcafe.py.
Fix syntax errors in labcafe.py.

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