Use example42's iptables module in the fixtures

.fixtures.yml

@@ -3,7 +3,7 @@ fixtures:
     "puppi": "git://github.com/example42/puppi.git"
     "monitor": "git://github.com/example42/puppet-monitor.git"
     "firewall": "git://github.com/example42/puppet-firewall.git"
-    "iptables": "git://github.com/netmanagers/puppet-iptables.git"
+    "iptables": "git://github.com/example42/puppet-iptables.git"
     "stdlib": "git://github.com/puppetlabs/puppetlabs-stdlib.git"
     "concat": "git://github.com/puppetlabs/puppetlabs-concat.git"