default ora and ease venv dir using {{ venv_dir }}

playbooks/roles/ora/vars/main.yml

@@ -4,8 +4,8 @@ ora_code_dir: "{{ app_base_dir }}/edx-ora"
 # Default nginx listen port
 # These should be overrided if you want
 # to serve all content on port 80
-ora_venv_dir: "/opt/edx"
-ease_venv_dir: "/opt/edx"
+ora_venv_dir: "{{ venv_dir }}"
+ease_venv_dir: "{{ venv_dir }}"
 ora_gunicorn_workers: 4
 ora_nginx_port: 18091
 ora_gunicorn_port: 8091