feat: collect metrics from nginx in proxy pod

Author: JoaoPedroPP

components/konflux-ui/staging/base/proxy/nginx.conf

@@ -45,6 +45,12 @@ http {
             try_files $uri /index.html;
         }
 
+        location /nginx_status {
+            stub_status;
+            allow 127.0.0.1;
+            deny all;
+        }
+
         location = /404.html {
         }
 

components/konflux-ui/staging/base/proxy/proxy.yaml

@@ -117,6 +117,9 @@ spec:
         - containerPort: 8080
           name: web
           protocol: TCP
+        - containerPort: 8888
+          name: web-metrics
+          protocol: TCP
         - containerPort: 9443
           name: web-tls
           protocol: TCP