Fix changing default encoding
Starting with 79fa35591e099a7b6981b873b930b943e5dc1827 it is not
possible to set a custom encoding on systems where initdb is not needed
(e.g. Debian). The autorequire introduce a circular dependency:
dependency cycles found: (Anchor[postgresql::server::service::begin] =>
Postgresql_psql[Set template1 encoding to UTF-8] =>
Class[Postgresql::Server::Initdb] =>
Postgresql_conf[listen_addresses] =>
Class[Postgresql::Server::Service] =>
Anchor[postgresql::server::service::begin])Move the relevant code from postgresql::server::initdb to
postgresql::server::late_initdb and include it when applicable so that
the postgresql_psql command gets run after the service has started up.