databases/postgresql??-server: rc-script should require DAEMON

Changeset ab83f2b4bb78 changed the startup order for Postgresql. The cleartmp
rc.d now comes after the Postgresql startup. Unfortunately, Postgresql likes
to create a socket in /tmp/.s.PGSQL.5432. After cleartmp does its work, that
socket disappears from the filesystem.

Submitted by: Jeroen Pulles
PR: 256335