Add a variable that defaults to kube_apiserver_port that defines

the which port the local nginx proxy should listen on for HA
local balancer configurations.

roles/kubernetes/preinstall/tasks/set_facts.yml

@@ -10,7 +10,7 @@
 - set_fact:
     kube_apiserver_endpoint: |-
       {% if not is_kube_master and loadbalancer_apiserver_localhost -%}
-           https://localhost:{{ kube_apiserver_port }}
+           https://localhost:{{ nginx_kube_apiserver_port }}
       {%- elif is_kube_master and loadbalancer_apiserver is not defined -%}
            http://127.0.0.1:{{ kube_apiserver_insecure_port }}
       {%- else -%}