Addon ingress: Update ingress-nginx/controller image from v1.8.0 to v1.8.1

[minikube-bot]

The ingress-nginx project released a new version

This PR was auto-generated by make update-ingress-version using update-ingress-version.yml CI Workflow.

[k8s-ci-robot]

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[k8s-ci-robot]

Hi @minikube-bot. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[minikube-pr-bot]

kvm2 driver with docker runtime

+----------------+----------+---------------------+
|    COMMAND     | MINIKUBE | MINIKUBE (PR 16832) |
+----------------+----------+---------------------+
| minikube start | 52.5s    | 52.8s               |
| enable ingress | 27.9s    | 27.4s               |
+----------------+----------+---------------------+

Times for minikube start: 52.5s 52.0s 52.5s 53.0s 52.4s
Times for minikube (PR 16832) start: 54.1s 53.4s 52.5s 51.4s 52.7s

Times for minikube ingress: 28.2s 27.8s 27.7s 27.8s 28.2s
Times for minikube (PR 16832) ingress: 26.7s 26.8s 29.3s 27.3s 26.8s

docker driver with docker runtime

+----------------+----------+---------------------+
|    COMMAND     | MINIKUBE | MINIKUBE (PR 16832) |
+----------------+----------+---------------------+
| minikube start | 23.7s    | 22.8s               |
| enable ingress | 44.4s    | 49.1s               |
+----------------+----------+---------------------+

Times for minikube start: 22.0s 25.0s 23.1s 22.3s 26.1s
Times for minikube (PR 16832) start: 24.7s 22.8s 21.5s 21.9s 23.2s

Times for minikube ingress: 48.4s 48.4s 48.4s 48.8s 27.9s
Times for minikube (PR 16832) ingress: 50.4s 49.4s 48.3s 48.4s 48.9s

docker driver with containerd runtime

+----------------+----------+---------------------+
|    COMMAND     | MINIKUBE | MINIKUBE (PR 16832) |
+----------------+----------+---------------------+
| minikube start | 22.5s    | 22.6s               |
| enable ingress | 34.8s    | 34.2s               |
+----------------+----------+---------------------+

Times for minikube start: 23.5s 23.9s 20.8s 20.9s 23.4s
Times for minikube (PR 16832) start: 22.5s 20.9s 23.8s 23.0s 22.6s

Times for minikube ingress: 30.3s 47.4s 30.3s 32.4s 33.3s
Times for minikube (PR 16832) ingress: 31.3s 28.4s 31.4s 32.3s 47.3s

[minikube-pr-bot]

These are the flake rates of all failed tests.

Environment	Failed Tests	Flake Rate (%)
Hyperkit_macOS	TestMinikubeProfile (gopogh)	0.00 (chart)
Hyperkit_macOS	TestNetworkPlugins/group/bridge/Start (gopogh)	3.01 (chart)
Hyperkit_macOS	TestRunningBinaryUpgrade (gopogh)	12.65 (chart)
Hyper-V_Windows	TestPause/serial/SecondStartNoReconfiguration (gopogh)	18.60 (chart)

To see the flake rates of all tests by environment, click here.