kubeadm support (#1631)

* kubeadm support

* move k8s master to a subtask
* disable k8s secrets when using kubeadm
* fix etcd cert serial var
* move simple auth users to master role
* make a kubeadm-specific env file for kubelet
* add non-ha CI job

* change ci boolean vars to json format

* fixup

* Update create-gce.yml

* Update create-gce.yml

* Update create-gce.yml

roles/kubernetes/node/tasks/install.yml

@@ -13,6 +13,18 @@
     ]"
   tags: facts
 
+- name: Set kubelet deployment to host if kubeadm is enabled
+  set_fact:
+    kubelet_deployment_type: host
+  when: kubeadm_enabled
+  tags: kubeadm
+
+- name: install | Copy binary from download dir
+  command: rsync -piu "{{ local_release_dir }}/kubeadm" "{{ bin_dir }}/kubeadm"
+  changed_when: false
+  when: kubeadm_enabled
+  tags: kubeadm
+
 - include: "install_{{ kubelet_deployment_type }}.yml"
 
 - name: install | Write kubelet systemd init file