Playbook: Remove legacy computers

playbook/roles/repository/tasks/main.yml

 ---
+  - name: Remove legacy repositories from git.erp5.org
+    apt_key: id=1A716324 state=absent
+    when: ansible_distribution == "Debian"
+
+  - file: path=/etc/apt/sources.list.d/re6stnet.list state=absent
+    when: ansible_distribution == "Debian"
+
   - name: Install Debian 8 repository key
     apt_key: url={{ base_open_build_url }}/Debian_8.0/Release.key state=present
     when: ansible_distribution == "Debian" and ansible_distribution_major_version == "8"