Add wait for kube-apiserver to kubernetes-apps

Fixes #777

roles/kubernetes-apps/ansible/tasks/main.yaml

 ---
+- name: Kubernetes Apps | Wait for kube-apiserver
+  uri: url=http://localhost:8080/healthz
+  register: result
+  until: result.status == 200
+  retries: 10
+  delay: 6
+
 - name: Kubernetes Apps | Lay Down KubeDNS Template
   template: src={{item.file}} dest={{kube_config_dir}}/{{item.file}}
   with_items: