From Wikitech

kubernetes-master is the Debian package containing the Kubernetes services for a master host.

The Wikimedia APT repo provides a version maintained by User:Akosiaris. The same is true for kubernetes-client.

apt-cache show kubernetes-master

Package: kubernetes-master
Source: kubernetes
Description: Kubernetes services for master host
 Container Cluster Manager from Google. Kubernetes is an open source system
 for managing containerized applications across multiple hosts, providing
 basic mechanisms for deployment, maintenance, and scaling of applications.
 Linux kernel version 3.8 or above is required for proper operation of the
 daemon process, and that any lower versions may have subtle and/or glaring
 This package provides "kube-apiserver", "kube-controller-manager" and
 "kube-scheduler" daemons.