common/apt: install screen and zsh

Signed-off-by: Mattia Rizzolo <mattia@debian.org>

roles/common/tasks/apt.yml

@@ -10,9 +10,10 @@
   apt:
     name: "{{ item }}"
     state: present
-
   with_items:
+    - iptables
+    - openssh-server
     - python
+    - screen
     - vim
-    - openssh-server
-    - iptables
+    - zsh