Escalate privileges when copy fluentd custom config

Fluentd custom output and filter configs target directory can have unknown
permissions, so copy these configs as root.

Change-Id: I1649f8cd4a5066245e8f79e8e71b6bbf04dbcb62
Closes-Bug: #1760213

ansible/roles/common/tasks/config.yml

@@ -88,6 +88,8 @@
   template:
     src: "{{ item.path }}"
     dest: "{{ node_config_directory }}/fluentd/output/{{ item.path | basename }}"
+    mode: "0660"
+  become: true
   register: fluentd_output_custom
   when:
     - enable_fluentd | bool
@@ -137,6 +139,8 @@
   template:
     src: "{{ item.path }}"
     dest: "{{ node_config_directory }}/fluentd/filter/{{ item.path | basename }}"
+    mode: "0660"
+  become: true
   register: fluentd_filter_custom
   with_items: "{{ find_custom_fluentd_filters.files }}"
   notify: