Fix etcd standalone deployment

etcd facts are generated in kubernetes/preinstall, so etcd nodes need
to be evaluated first before the rest of the deployment.

Moved several directory facts from kubernetes/node to
kubernetes/preinstall because they are not backward dependent.

roles/kubernetes/preinstall/tasks/main.yml

@@ -28,25 +28,28 @@
     path: "{{ kube_config_dir }}"
     state: directory
     owner: kube
+  when: "{{ inventory_hostname in groups['k8s-cluster'] }}"
 
 - name: Create kubernetes script directory
   file:
     path: "{{ kube_script_dir }}"
     state: directory
     owner: kube
+  when: "{{ inventory_hostname in groups['k8s-cluster'] }}"
 
 - name: Create kubernetes manifests directory
   file:
     path: "{{ kube_manifest_dir }}"
     state: directory
     owner: kube
+  when: "{{ inventory_hostname in groups['k8s-cluster'] }}"
 
 - name: Create kubernetes logs directory
   file:
     path: "{{ kube_log_dir }}"
     state: directory
     owner: kube
-  when: ansible_service_mgr in ["sysvinit","upstart"]
+  when: ansible_service_mgr in ["sysvinit","upstart"] and "{{ inventory_hostname in groups['k8s-cluster'] }}"
 
 - name: check cloud_provider value
   fail:
@@ -64,7 +67,7 @@
   with_items:
     - "/etc/cni/net.d"
     - "/opt/cni/bin"
-  when: kube_network_plugin in ["calico", "weave"]
+  when: kube_network_plugin in ["calico", "weave"] and "{{ inventory_hostname in groups['k8s-cluster'] }}"
 
 - name: Update package management cache (YUM)
   yum: update_cache=yes name='*'