Update common role

- Add secure-secure-shell task
- Add unattended-upgrades task
- Change package installation tasks
- Remove website tasks from generic services group

roles/common/tasks/unattended-upgrades.yml

@@ -0,0 +1,18 @@
+---
+- name: install unattended-upgrades
+  apt:
+    name: unattended-upgrades
+    state: present
+
+- name: copy 10periodic
+  copy:
+    src: files/10periodic
+    dest: /etc/apt/apt.conf.d
+
+- name: template 50unattended-upgrades
+  template:
+    src: templates/50unattended-upgrades.j2
+    dest: /etc/apt/apt.conf.d/50unattended-upgrades
+  notify:
+    - upgrade packages
+    - clean package cache