Update firewall.pp to replace action with jump

https://forge.puppet.com/modules/puppetlabs/firewall/readme#migration-path-to-v700

The action attribute within the firewall type has been removed as it was merely a restricted version of the jump attribute, both of them managing the same function, this being reasoned as a way to enforce the use of generic parameters. From this point the parameters formerly unique to action should now be passed to jump.

manifests/firewall.pp

@@ -5,7 +5,7 @@
   assert_private()
 
   firewall { '500 allow Jenkins inbound traffic':
-    action => 'accept',
+    jump   => 'accept',
     state  => 'NEW',
     dport  => [jenkins_port()],
     proto  => 'tcp',