
In case of setting file permissions to 640 systemd will raise an alert [1]. In order to avoid spamming in logs, we change default mode to 644 as no passwords or credentials are going to be stored in this file. With that we provide a way to override file mode if needed. [1] https://paste.openstack.org/show/b83tSrjni8iB2WNsvDfQ/ Change-Id: I73164e9d4b02d7b3fae21b912369afcd1cc64abf