Ingress NGINX: Promote E2E Test Echo v1.1.1.

Commit: kubernetes/ingress-nginx@b932ac0
Job: https://prow.k8s.io/view/gs/kubernetes-ci-logs/logs/post-ingress-nginx-e2e-test-echo/1878552007829098496
Build: https://storage.googleapis.com/kubernetes-ci-logs/logs/post-ingress-nginx-e2e-test-echo/1878552007829098496/artifacts/build.log

Author: Gacko

registry.k8s.io/images/k8s-staging-ingress-nginx/images.yaml

@@ -150,6 +150,7 @@
   dmap:
     "sha256:1cec65aa768720290d05d65ab1c297ca46b39930e56bc9488259f9114fcd30e2": ["v1.0.1"]
     "sha256:0713ba47b3e4359b38ad53cd785c34b158e168a91636520a4a5e54cd500d8356": ["v1.1.0"]
+    "sha256:a1e0152e2eeab26e3f6fd3986f3d82b17bc7711717cae5392dcd18dd447ba6ef": ["v1.1.1"]
     "sha256:41c043188a499d460e7425883a3b196e13f10bf40c395895dbdf06caf3324536": ["v20200627-g35e992fe0"]
     "sha256:8d6c4588da364e0ad251ad19203b2dd1d3f99a9229c019bdecfbb56211f94419": ["v20200708-g5521f7151"]
     "sha256:e5cb6169a0c2bc9dc188abb6756a976b6386cac95ccd5c28cf8ac5ac010cbd60": ["v20200812-gf6dce060b"]