Problem in gen_configs() in deploy.py #168

when calling ./deploy.py acs postdeploy I get

File "./deploy.py", line 826, in gen_configs
config["api_servers"] = "https://"+config["kubernetes_master_node"][0]+":"+str(config["k8sAPIport"])

The reason is the empty config["kubernetes_master_node"][0]. I could perhaps fill in missing values but need more info on the structure of the config. What exactly is stored in
config["kubernetes_master_node"] = Nodes (line 646)?

This way I could try to fix the connection problem:

Checking configurations 'kubernetes_master_node' = '[]'
Checking configurations 'kubernetes_master_ssh_user' = 'dlwsadmin'
Checking configurations 'api_servers' = 'https://clusterdl-clusterdlresgrp-3d8900mgmt.westeurope.cloudapp.azure.com:1443'
Checking configurations 'etcd_user' = 'dlwsadmin'
Checking configurations 'etcd_node' = '[]'
Checking configurations 'etcd_endpoints' = ''
Checking configurations 'ssh_cert' = './deploy/sshkey/id_rsa'
Checking configurations 'pod_ip_range' = '10.2.0.0/16'
Checking configurations 'kubernetes_docker_image' = 'mlcloudreg.westus.cloudapp.azure.com:5000/dlworkspace/hyperkube:v1.7.5'
Checking configurations 'service_cluster_ip_range' = '10.3.0.0/16'
./
./macvlan
./dhcp
./loopback
./ptp
./ipvlan
./bridge
./tuning
./noop
./host-local
./cnitool
./flannel
lost connection
lost connection
lost connection
lost connection