Update k8s version

Author: uc-msft

samples/features/sql-big-data-cluster/deployment/kubeadm/ubuntu/setup-k8s-master.sh

@@ -2,7 +2,7 @@
 
 # Initialize a kubernetes cluster on the current node.
 #
-KUBE_VERSION=1.14.0
+KUBE_VERSION=1.15.0
 sudo kubeadm init --pod-network-cidr=10.244.0.0/16 --kubernetes-version=$KUBE_VERSION
 mkdir -p $HOME/.kube
 sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config

samples/features/sql-big-data-cluster/deployment/kubeadm/ubuntu/setup-k8s-prereqs.sh

@@ -10,7 +10,7 @@ cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
 deb http://apt.kubernetes.io/ kubernetes-xenial main
 EOF
 
-KUBE_DPKG_VERSION=1.14.0-00
+KUBE_DPKG_VERSION=1.15.0-00
 apt-get update
 apt-get install -y ebtables ethtool
 apt-get install -y docker.io