Config has wrong permissions allowing global read of sensitive data
# Description:
`etc/ddclient/ddclient.conf` should be installed with 640 permissions and owned by root:ddclient as per [upstream](https://github.com/ddclient/ddclient/blob/e0611ab192d6b8d3d2b09d6868d063ca5591ad02/ddclient.in#L1576). This is to prevent global scope from reading credentials and other sensitive data.
issue