set python_version env var before running createadmin

roles/lokole/tasks/setup.yml

@@ -6,6 +6,7 @@
 - name: Create Lokole admin user with password, for http://box{{ lokole_url }}    # http://box/lokole
   shell: |
     while read envvar; do export "$envvar"; done < {{ lokole_run_dir }}/settings.env
+    python_version=$(python3 -c 'from sys import version_info; print("%s.%s" % (version_info.major, version_info.minor));';)
     cd {{ lokole_venv }}/lib/python${python_version}/site-packages/
     export FLASK_APP="opwen_email_client.webapp:app"
     {{ lokole_venv }}/bin/flask manage createadmin --name='{{ lokole_admin_user }}' --password='{{ lokole_admin_password }}'