set ${puppet_ssldir}/ca to 770 instead of 750 - puppet agent resets to 770

puppet agent (at least 3.3.1) resets /var/lib/puppet/ssl/ca to 0770, so lets use that instead so we dont keep flipping back and forth. :)


Notice: /Stage[main]/Puppet::Passenger/File[/var/lib/puppet/ssl/ca]/mode: mode changed '0770' to '0750'