More idempotency fixes

Fixed sync_tokens fact
Fixed sync_certs for k8s tokens fact
Disabled register docker images changability
Fixed CNI dir permission
Fix idempotency for etcd pre upgrade checks

roles/etcd/tasks/pre_upgrade.yml

@@ -28,6 +28,7 @@
 - name: "Pre-upgrade | find etcd-proxy container"
   command: "{{ docker_bin_dir }}/docker ps -aq --filter 'name=etcd-proxy*'"
   register: etcd_proxy_container
+  changed_when: false
   failed_when: false
 
 - name: "Pre-upgrade | remove etcd-proxy if it exists"
@@ -47,6 +48,7 @@
   until: etcd_member_list.rc != 2
   run_once: true
   when: etcdctl_installed.stat.exists
+  changed_when: false
   failed_when: false
 
 - name: "Pre-upgrade | change peer names to SSL"