Change access permission of files in /etc/os-net-config

Some of these files are used for validations on the undercloud,
that are run as non-root user without sudo.

Change-Id: I15f9cc771c754c257b795263b8d6c3e0d19fd46c
Closes-Bug: #1970437
(cherry picked from commit f06bc84cc0)

tripleo_ansible/roles/tripleo_network_config/tasks/main.yml

@@ -80,6 +80,7 @@
       copy:
         content: "{{ os_net_config_mappings_result.mapping | to_nice_yaml }}"
         dest: /etc/os-net-config/mapping.yaml
+        mode: 0644
       when: os_net_config_mappings_result.changed|bool
 
     - name: Manage NetworkConfig with tripleo_os_net_config module

tripleo_ansible/roles/tripleo_network_config/tasks/os_net_config.yml

@@ -30,7 +30,7 @@
       copy:
         content: "{{tripleo_network_config_override | to_yaml}}"
         dest: "{{ nic_config_file }}"
-        mode: 0600
+        mode: 0644
         backup: true
       when:
         - tripleo_network_config_override.keys()|length > 0
@@ -39,7 +39,7 @@
       template:
         src: "{{ tripleo_network_config_script_path }}"
         dest: "{{ nic_config_file }}"
-        mode: 0600
+        mode: 0644
         backup: true
       when:
         - not tripleo_network_config_with_ansible|bool
@@ -49,7 +49,7 @@
       template:
         src: "{{ tripleo_network_config_template }}"
         dest: "{{ nic_config_file }}"
-        mode: 0600
+        mode: 0644
         backup: true
       when:
         - tripleo_network_config_with_ansible|bool