ingress addon: Update controller & kube-webhook-certgen images

[spowelljr]

Update ingress-nginx/controller from v1.7.0 to v1.8.0
Update ingress-nginx/kube-webhook-certgen from v20230312-helm-chart-4.5.2-28-g66a760794 to v20230407

Also updated the ingress-nginx/kube-webhook-certgen image in the gcp-auth addon

Before:

registry.k8s.io/ingress-nginx/controller:v1.7.0
22 vulnerabilities found in 6 packages
  UNSPECIFIED  5  
  LOW          0  
  MEDIUM       7  
  HIGH         8  
  CRITICAL     2  

After:

registry.k8s.io/ingress-nginx/controller:v1.8.0
9 vulnerabilities found in 2 packages
  UNSPECIFIED  1  
  LOW          0  
  MEDIUM       1  
  HIGH         5  
  CRITICAL     2 

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: spowelljr

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• OWNERS [spowelljr]

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[spowelljr]

/ok-to-test

[minikube-pr-bot]

kvm2 driver with docker runtime

+----------------+----------+---------------------+
|    COMMAND     | MINIKUBE | MINIKUBE (PR 16601) |
+----------------+----------+---------------------+
| minikube start | 51.5s    | 53.6s               |
| enable ingress | 26.4s    | 27.6s               |
+----------------+----------+---------------------+

Times for minikube (PR 16601) start: 56.0s 52.7s 55.9s 51.7s 51.4s
Times for minikube start: 48.8s 51.9s 51.7s 53.8s 51.6s

Times for minikube ingress: 27.1s 24.1s 27.1s 26.7s 27.2s
Times for minikube (PR 16601) ingress: 27.2s 28.2s 28.2s 27.1s 27.6s

docker driver with docker runtime

+----------------+----------+---------------------+
|    COMMAND     | MINIKUBE | MINIKUBE (PR 16601) |
+----------------+----------+---------------------+
| minikube start | 23.4s    | 23.0s               |
| enable ingress | 21.4s    | 20.8s               |
+----------------+----------+---------------------+

Times for minikube start: 22.1s 25.0s 24.6s 21.5s 23.9s
Times for minikube (PR 16601) start: 24.3s 22.3s 22.3s 21.8s 24.3s

Times for minikube ingress: 20.9s 21.3s 21.9s 20.9s 21.8s
Times for minikube (PR 16601) ingress: 20.4s 20.9s 20.9s 20.9s 20.9s

docker driver with containerd runtime

+----------------+----------+---------------------+
|    COMMAND     | MINIKUBE | MINIKUBE (PR 16601) |
+----------------+----------+---------------------+
| minikube start | 21.8s    | 21.8s               |
| enable ingress | 29.6s    | 31.8s               |
+----------------+----------+---------------------+

Times for minikube start: 20.9s 23.6s 20.3s 20.1s 23.9s
Times for minikube (PR 16601) start: 20.5s 20.8s 23.3s 20.4s 23.8s

Times for minikube ingress: 31.4s 19.4s 33.4s 32.4s 31.4s
Times for minikube (PR 16601) ingress: 31.3s 31.3s 31.4s 31.4s 33.4s

[minikube-pr-bot]

These are the flake rates of all failed tests.

Environment	Failed Tests	Flake Rate (%)
Docker_Windows	TestOffline (gopogh)	0.00 (chart)
Docker_Windows	TestStartStop/group/embed-certs/serial/Pause (gopogh)	3.48 (chart)
QEMU_macOS	TestErrorSpam/setup (gopogh)	4.83 (chart)
Docker_Windows	TestPause/serial/PauseAgain (gopogh)	9.62 (chart)
Docker_Linux_crio_arm64	TestPause/serial/SecondStartNoReconfiguration (gopogh)	22.07 (chart)

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