Fix support for ansible 2.7.9 (#4375)

roles/kubernetes-apps/external_provisioner/local_volume_provisioner/tasks/main.yml

@@ -9,7 +9,7 @@
   delegate_to: "{{ item[0] }}"
   with_nested:
     - "{{ groups['k8s-cluster'] }}"
-    - "{{ local_volume_provisioner_storage_classes.keys() }}"
+    - "{{ local_volume_provisioner_storage_classes.keys() | list}}"
 
 - name: Local Volume Provisioner | Create addon dir
   file:

roles/kubernetes/preinstall/tasks/0050-create_directories.yml

@@ -52,7 +52,7 @@
     owner: root
     group: root
     mode: 0700
-  with_items: "{{ local_volume_provisioner_storage_classes.keys() }}"
+  with_items: "{{ local_volume_provisioner_storage_classes.keys() | list }}"
   when:
     - inventory_hostname in groups['k8s-cluster']
     - local_volume_provisioner_enabled