Fix warning and conditionalize questions when install SlapOS node

See merge request nexedi/slapos.package!136

playbook/roles/slapos/tasks/main.yml

@@ -12,7 +12,7 @@
 
   - name: Configure SlapOS with slapos node register
     shell: "slapos node register --token {{ slapostoken }} --master-url {{ slapos_master_url }} --master-url-web {{ slapos_web_master_url }} --interface-name {{ interface_name }} {{ computer_name }}"
-    when: slapos_cfg.stat.exists == False and "{{ slapostoken }}" != "notoken" and "{{ computer_name }}" != "noname"
+    when: slapos_cfg.stat.exists == False and slapostoken != "notoken" and computer_name != "noname"
 
   - name: Check if configuration exists already
     stat: path=/etc/opt/slapos/slapos.cfg

playbook/slapos.yml

@@ -2,9 +2,6 @@
   hosts: 127.0.0.1
   connection: local
 
-  vars:
-    - interface_name: lo
-
   vars_prompt:
     - name: "slapos_master_url"
       prompt: "What is the url to the SlapOS Master API?  (ignore if you already have a configured re6st and slapos):"
@@ -17,14 +14,24 @@
       default: "https://slapos.vifib.com/"
 
     - name: "computer_name"
-      prompt: "What is this computer name?  (ignore if you already have a configured re6st and slapos):"
+      prompt: "Name your computer (ignore if you already have a configured re6st and slapos or if you don't want to register your computer to SlapOS Master):"
       private: no
       default: "noname"
 
-    - name: "slapostoken"
-      prompt: "If you have slapos token if you have (ignore if you already have a configured slapos):"
-      private: no
-      default: "notoken"
+  pre_tasks:
+    - pause:
+        prompt: "Input your slapos token (ignore if you already have a configured slapos) [notoken]"
+      when: computer_name != "noname"
+      register: prompt
+    - set_fact:
+        slapostoken: "{{ prompt.user_input | default('notoken', true) }}" 
+
+    - pause:
+        prompt: "Which network interface are you using? (ignore if you already have a configured re6st) [lo]"
+      when: slapostoken != "notoken"
+      register: prompt
+    - set_fact:
+        interface_name: "{{ prompt.user_input | default('lo', true) }}" 
 
   roles:
     - { role: slapos, package_state: present }