[enh] Add haveged as dependency
[enh] Add haveged as dependency

Increase entropy on virtual servers. Speed up key generation by openssl and dnssec
See https://github.com/YunoHost/yunohost/pull/201 & https://bugs.launchpad.net/ubuntu/+source/bind9/+bug/963368
YunoHost/yunohost,YunoHost/moulinette-yunohost,YunoHost/moulinette-yunohost,YunoHost/yunohost,YunoHost/yunohost,YunoHost/yunohost,YunoHost/moulinette-yunohost,YunoHost/moulinette-yunohost,YunoHost/moulinette-yunohost