Added rate limiting to ingress controller

manifests/nginx_ingress_http.yaml

@@ -18,6 +18,11 @@ metadata:
   name: tfs-ingress
   annotations:
     nginx.ingress.kubernetes.io/rewrite-target: /$2
+    nginx.ingress.kubernetes.io/limit-rps: '2'
+    nginx.ingress.kubernetes.io/limit-connections: '5'
+    nginx.ingress.kubernetes.io/proxy-connect-timeout: '10'
+    nginx.ingress.kubernetes.io/proxy-send-timeout: '10'
+    nginx.ingress.kubernetes.io/proxy-read-timeout: '10'
 spec:
   rules:
     - http: