updating gather_assets to use paver instead of rake

playbooks/roles/edxapp/defaults/main.yml

@@ -152,7 +152,7 @@ EDXAPP_CC_PROCESSOR:
 # does not affect verified students
 EDXAPP_PAID_COURSE_REGISTRATION_CURRENCY: ['usd', '$']
 
-# Configure rake tasks in edx-platform to skip Python/Ruby/Node installation
+# Configure paver tasks in edx-platform to skip Python/Ruby/Node installation
 EDXAPP_NO_PREREQ_INSTALL: 1
 
 # whether to setup the python codejail or not

playbooks/roles/edxapp/tasks/service_variant_config.yml

@@ -89,11 +89,11 @@
   - "restart edxapp"
   - "restart edxapp_workers"
 
-# Gather assets using rake if possible
+# Gather assets using paver if possible
 
-- name: gather {{ item }} static assets with rake
+- name: gather {{ item }} static assets with paver
   shell: >
-    SERVICE_VARIANT={{ item }} rake {{ item }}:gather_assets:aws
+    SERVICE_VARIANT={{ item }} paver update_assets {{ system }} --settings=aws
     executable=/bin/bash
     chdir={{ edxapp_code_dir }}
   sudo_user: "{{ edxapp_user }}"