roles/common: Move tags from subtask to main one

Child tasks inherit the tag of the parent.

Signed-off-by: Alan Orth <alan.orth@gmail.com>

roles/common/tasks/iptables_Debian.yml

@@ -1,10 +1,8 @@
 ---
 - name: Install iptables-persistent
   apt: pkg=iptables-persistent update_cache=yes
-  tags: firewall
 
 - name: Copy /etc/iptables/rules.v4
   template: src=iptables.j2 dest=/etc/iptables/rules.v4 owner=root mode=0600
   notify:
     - restart iptables-persistent
-  tags: firewall

roles/common/tasks/main.yml

@@ -14,6 +14,7 @@
 
 - include: iptables_Debian.yml
   when: ansible_os_family == 'Debian'
+  tags: firewall
 
 - name: Reconfigure /etc/ssh/sshd_config
   template: src=sshd_config_{{ansible_distribution}}-{{ansible_distribution_version}}.j2 dest=/etc/ssh/sshd_config owner=root group=root mode=0600