firewall: Fixed installation for CentOS 7.

firewall/manifests/init.pp

@@ -135,10 +135,21 @@ class firewall::common::iptables {
       'centos','redhat': {
         package { "iptables":
           ensure => installed,
-          require => Package["iptables-ipv6"],
         }
+        if versioncmp($::operatingsystemrelease, 7) == 1 {
+          package { "firewalld":
+            ensure => absent,
+            before => Package["iptables"],
+          }
+          package { "iptables-services":
+            ensure => installed,
+            before => Package["iptables"],
+          }
+        } else {
           package { "iptables-ipv6":
             ensure => installed,
+            before => Package["iptables"],
+          }
         }
       }
       'fedora': {