Add support metadata

iptables/meta/sphinx.yml

+doc:
+  name: iptables
+  description: iptables is a user-space application program that allows a system administrator to configure the tables provided by the Linux kernel firewall and the chains and rules it stores.
+  role:
+  {%- if pillar.iptables.service is defined %}
+    service:
+      name: service
+      param: {}
+  {%- endif %}

metadata/service/support.yml

+parameters:
+  iptables:
+    _support:
+      collectd:
+        enabled: false
+      heka:
+        enabled: false
+      sensu:
+        enabled: true
+      sphinx:
+        enabled: true