The Kubernetes version has been updated to v1.18.2.
Two new templates were added to provide support for Kubernetes v1.18.2, these
are:
Support of the templates for Kubernetes v1.15.11 will be deprecated.
Added support for the sha256 digest check for k8s hyperkube image.
The behaviour of the Kubernetes development templates has changed to make
all new clusters created with them publicly accessible over the internet
by default.
Added support to allow for cluster labels to be over-ridden at creation time
by means of merging changes rather than having to provide the entire label
list.
Enable visibility of the cluster health status for private clusters.
Provide a means to limit access to the Kubernetes API through the use of the
the master_lb_allowed_cidrs label.
