fix(prompts): add default values to vars_prompt to skip in non-interactive mode

main.yml

@@ -18,21 +18,25 @@
     - name: user_name
       prompt: |
         What is your username?
+      default: ""
       private: false
 
     - name: user_public_key
       prompt: |
         What is your ssh key?
+      default: ""
       private: false
 
     - name: user_password
       prompt: |
         What is your password?
+      default: ""
       confirm: true
 
     - name: root_password
       prompt: |
         What is your root password?
+      default: ""
       confirm: true
   pre_tasks:
     - name: Apply prompted authentication values to system input