couple of bug fixes

playbooks/roles/edxapp/tasks/deploy.yml

@@ -234,7 +234,7 @@
   sudo_user: "{{ edxapp_sandbox_user }}"
   when: EDXAPP_PYTHON_SANDBOX
   register: sandbox_install_output
-  changed_when: 'installed' in sandbox_install_output
+  changed_when: "'installed' in sandbox_install_output"
   notify:
   - "edxapp | restart edxapp"
   - "edxapp | restart edxapp_workers"

playbooks/roles/edxapp/tasks/python_sandbox_env.yml

 - name: edxapp | code sandbox | Create edxapp sandbox user
-  user: name={{ edxapp_sandbox_user }} group={{ edxapp_sandbox_user }} shell=/bin/false home={{ edxapp_sandbox_venv_dir }}
+  user: name={{ edxapp_sandbox_user }} shell=/bin/false home={{ edxapp_sandbox_venv_dir }}
   notify:
   - "edxapp | restart edxapp"
   - "edxapp | restart edxapp_workers"