[playbooks] update-services.yml: Don't ask to update

playbooks/update-services.yml

@@ -6,6 +6,7 @@
 - name: Update project(s)
   hosts: localhost
   vars:
+    docker_pull_images: true
     run_update: true
   vars_prompt:
     - name: selected_projects
@@ -13,11 +14,6 @@
       private: false
       unsafe: true
 
-    - name: docker_pull_images
-      prompt: "Pull project(s) images?"
-      default: false
-      private: false
-
   tasks:
     - name: Update project(s)
       include_role: