fix tag name

docker/build/xqwatcher/Dockerfile

@@ -5,6 +5,6 @@ RUN apt-get update
 ADD . /edx/app/edx_ansible/edx_ansible
 COPY docker/build/xqwatcher/ansible_overrides.yml /
 WORKDIR /edx/app/edx_ansible/edx_ansible/docker/plays
-RUN /edx/app/edx_ansible/venvs/edx_ansible/bin/ansible-playbook xqwatcher.yml -i '127.0.0.1,' -c local -t "install:base,install:configuration,install:system-requirements,install:application-requirements,install:code" -e@/ansible_overrides.yml
+RUN /edx/app/edx_ansible/venvs/edx_ansible/bin/ansible-playbook xqwatcher.yml -i '127.0.0.1,' -c local -t "install:base,install:configuration,install:system-requirements,install:app-requirements,install:code" -e@/ansible_overrides.yml
 WORKDIR /edx/app
 CMD ["/edx/app/supervisor/venvs/supervisor/bin/supervisord", "-n", "--configuration", "/edx/app/supervisor/supervisord.conf"]