Automatic startup: open-rc DUNITER_HOME should have same value as systemd one

The open-rc startup script is using /var/lib/duniter as DUNITER_HOME while systemd is using /var/lib/duniter/.config/duniter. The latter must be used also in open-rc.

Do not forget to modify the init.d and the conf.d files.

Edited by Stéphane Veyret
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