Add test 'node_modules' in '.gitignore'
Add test 'node_modules' in '.gitignore'

Change-Id: I8295ae5b15eb46c93b90d619d2a92aa1fc50a280

openstack/freezer-web-ui,openstack/freezer-web-ui,openstack/freezer-web-ui,openstack/freezer-web-ui