Added all files

examples/021_vars/roles/nginx/templates/nginx.conf.j2

@@ -0,0 +1,13 @@
+upstream {{ item.key }} {
+{% for server in groups.webserver %}
+    server {{ server }}:{{ item.value.backend }};
+{% endfor %}
+}
+
+server {
+    listen {{ item.value.frontend }};
+
+    location / {
+        proxy_pass http://{{ item.key }};
+    }
+}