Safe-guard calls to echo with || true.

Safe-guard calls to echo with || true.

This helps towards making sure init.d scripts called with `set -e`
continue to work, see #661002.

In particular, this avoids blocking all init.d scripts run on a terminal
where civis and cnorm are capabilities not available, such as cmd.exe .

Thanks-to: Sam Hocevar <sho@debian.org>