Ingress NGINX: Promote Test Runner v2.2.2.

Commit: kubernetes/ingress-nginx@782c332
Job: https://prow.k8s.io/view/gs/kubernetes-ci-logs/logs/post-ingress-nginx-test-runner/1960493617764110336
Build: https://storage.googleapis.com/kubernetes-ci-logs/logs/post-ingress-nginx-test-runner/1960493617764110336/artifacts/build.log

Author: Gacko

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

@@ -373,6 +373,7 @@
     "sha256:01201e647bae6c805c00e1b532734c48798c4577bde12ccfb3eca3c0d00b10fd": ["v2.1.1"]
     "sha256:d0e1c47936200ea40294436dee573451aaae65bef5942cd3a4d56d43c92ad93d": ["v2.2.0"]
     "sha256:8407e6ccec478e9791267657995ee7a021385c52d8f79ea0e6aa4461742ecd21": ["v2.2.1"]
+    "sha256:adc146da02b1c75ddb2d3bd2e20a05aceabc4c15f1a1d67192737b8a1fc47398": ["v2.2.2"]
 
 # Ingress NGINX: Chart
 - name: charts/ingress-nginx