Merge pull request #4292 from edx/derf/stop_using_ansible_npm_module

stop using ansible npm module

playbooks/roles/edxapp/tasks/deploy.yml

@@ -247,12 +247,11 @@
     - install
     - install:app-requirements
 
+#install with the shell command instead of the ansible npm module so we don't accidentally re-write package.json 
 - name: install node dependencies
-  npm:
-    executable: "{{ edxapp_nodeenv_bin }}/npm"
-    path: "{{ edxapp_code_dir }}"
-    production: "{{ edxapp_npm_production }}"
-    state: latest
+  shell: "{{ edxapp_nodeenv_bin }}/npm install"
+  args:
+    chdir: "{{ edxapp_code_dir }}"
   environment: "{{ edxapp_environment }}"
   become_user: "{{ edxapp_user }}"
   tags: