Fix an annoying warning generated by cron when using postgresql::backup
Fix an annoying warning generated by cron when using postgresql::backup

The cronjob created by postgresql::backup runs as root, but switches to postgres
user to dump the database. However, as the postgres user is unable to cd to
/root, the cronjob to complain. Added a "cd /tmp" to the cronjob so that the
warning is removed.

Signed-off-by: Samuli Seppänen <be49b59234361de284476e9a2215fb6477f46673@openvpn.net>

Puppet-Finland/postgresql,Puppet-Finland/postgresql