Some quick bugfixes in hub config.py
Some quick bugfixes in hub config.py

jamesfolberth/jupyterhub_AWS_deployment,jamesfolberth/NGC_STEM_camp_AWS,jamesfolberth/jupyterhub_AWS_deployment,jamesfolberth/jupyterhub_AWS_deployment,jamesfolberth/jupyterhub_AWS_deployment,jamesfolberth/NGC_STEM_camp_AWS