playbook: Standardize setting user input

playbook/wendelin-olimex-base.yml

@@ -7,9 +7,12 @@
   connection: local
 
   pre_tasks:
+    - name: Set Computer reference
+      block:
         - pause:
             prompt: "What is the reference of your computer (COMP-XXXX)?"
           register: prompt
+
         - set_fact:
             computer_id: "{{ prompt.user_input }}"