Imports
- knative.dev/pkg/metrics
- go.uber.org/zap
- knative.dev/pkg/client/injection/kube/client
- k8s.io/api/admission/v1beta1
- go.opencensus.io/stats
- k8s.io/client-go/listers/core/v1
- knative.dev/pkg/webhook/certificates/resources
- golang.org/x/sync/errgroup
- go.opencensus.io/stats/view
- go.opencensus.io/tag
- k8s.io/apimachinery/pkg/api/errors
- k8s.io/client-go/kubernetes
- knative.dev/pkg/client/injection/kube/informers/factory
- knative.dev/pkg/logging
- knative.dev/pkg/logging/logkey
- knative.dev/pkg/system