roles/common: Remove Ubuntu 14.04 logic

We're only supporting Ubuntu 16.04 now.

roles/common/tasks/firewall_Ubuntu.yml

@@ -1,21 +1,4 @@
 ---
-- name: Install iptables-persistent
-  when: ansible_distribution_version | version_compare('14.04', '==')
-  apt: pkg=iptables-persistent update_cache=yes
-  tags: packages
-
-- name: Copy /etc/iptables/rules.v4
-  when: ansible_distribution_version | version_compare('14.04', '==')
-  template: src=iptables.j2 dest=/etc/iptables/rules.v4 owner=root mode=0600
-  notify:
-    - restart iptables-persistent
-
-- name: Copy /etc/iptables/rules.v6
-  when: ansible_distribution_version | version_compare('14.04', '==')
-  template: src=ip6tables.j2 dest=/etc/iptables/rules.v6 owner=root group=root mode=0600
-  notify:
-    - restart iptables-persistent
-
 - name: Install firewalld and deps
   when: ansible_distribution_version | version_compare('15.04', '>=')
   apt: pkg={{ item }} state=latest

roles/common/tasks/packages_Ubuntu.yml

@@ -3,10 +3,6 @@
   template: src=sources.list.j2 dest=/etc/apt/sources.list owner=root group=root mode=0644
   when: ansible_architecture != 'armv7l'
 
-- name: Add GPG key for Extras repo
-  apt_key: id=0xC47415DFF48C09645B78609416126D3A3E5C1192 url=https://keyserver.ubuntu.com/pks/lookup?op=get&search=0xC47415DFF48C09645B78609416126D3A3E5C1192 state=present
-  when: ansible_distribution_version | version_compare('14.04', '==')
-
 - name: Upgrade base OS
   apt: upgrade=dist update_cache=yes
 

roles/common/templates/sources.list.j2

@@ -15,11 +15,6 @@ deb http://{{ apt_mirror }}/ubuntu/ {{ ansible_distribution_release }}-updates m
 ###### Ubuntu Partner Repo
 deb http://archive.canonical.com/ubuntu {{ ansible_distribution_release }} partner
 
-{% if ansible_distribution_version | version_compare('14.04', '==') %}
-{# extras repo was discontinued after 14.10, but the latest we deploy is 14.04 #}
-###### Ubuntu Extras Repo
-deb http://extras.ubuntu.com/ubuntu {{ ansible_distribution_release }} main
-{% endif %}
 {% else %}
 {% set apt_mirror    = apt_mirror | default('httpredir.debian.org') %}
 deb http://{{ apt_mirror }}/debian/ {{ ansible_distribution_release }} main contrib non-free