Revert "fix(units): Drop automatic daemon-reload"

daemon-reload should be fixed now and the latest CoreOS with locksmith
is causing the etcd unit to get lazy-loaded before all the cloudinit
processes have finished configuring etcd via dropin files. In short,
the luck we were relying on to get by without daemon-reload has
officially run out. Cross your fingers!

This reverts commit 580460ff3f0dba4aa6ba655d54965cbfd184137a.