Replace deprecated k8s registry references.

Problem:
Previously all of Kubernetes' image hosting has been out of gcr.io. There were significant egress costs associated with this when images were pulled from entities outside gcp.  Refer to https://github.com/kubernetes/k8s.io/wiki/New-Registry-url-for-Kubernetes-(registry.k8s.io)

Solution:
As highlighted at KubeCon NA 2022 k8s infra SIG update, the replacement for k8s.gcr.io which is registry.k8s.io is now ready for mainstream use and the old k8s.gcr.io has been formally deprecated. This commit migrates all references for k3s to registry.k8s.io.

Signed-off-by: James Blair <mail@jamesblair.net>

scripts/test-helpers

@@ -456,7 +456,7 @@ provision-registry-proxy() {
     set -e -o pipefail
     local image="docker.io/library/registry:2.8.1"
     local prefix="docker-registry-"
-    local registries="docker.io:registry-1.docker.io k8s.gcr.io gcr.io quay.io ghcr.io"
+    local registries="docker.io:registry-1.docker.io registry.k8s.io gcr.io quay.io ghcr.io"
     local registries_yaml="$TEST_DIR/registries.yaml"
 
     echo "mirrors:" > $registries_yaml

tests/perf/tests/density/deployment.yaml

@@ -16,7 +16,7 @@ spec:
         group: {{.Group}}
     spec:
       containers:
-      - image: k8s.gcr.io/pause:3.1
+      - image: registry.k8s.io/pause:3.1
         imagePullPolicy: IfNotPresent
         name: {{.Name}}
         ports:

tests/perf/tests/load/config.yaml

@@ -199,7 +199,7 @@ steps:
     - basename: daemonset
       objectTemplatePath: daemonset.yaml
       templateFillMap:
-        Image: k8s.gcr.io/pause:3.0
+        Image: registry.k8s.io/pause:3.0
   {{end}}
   - namespaceRange:
       min: 1
@@ -434,7 +434,7 @@ steps:
       - basename: daemonset
         objectTemplatePath: daemonset.yaml
         templateFillMap:
-          Image: k8s.gcr.io/pause:3.1
+          Image: registry.k8s.io/pause:3.1
   {{end}}
   {{if $ENABLE_JOBS}}
   - namespaceRange:

tests/perf/tests/load/daemonset.yaml

@@ -1,4 +1,4 @@
-{{$Image := DefaultParam .Image "k8s.gcr.io/pause:3.1"}}
+{{$Image := DefaultParam .Image "registry.k8s.io/pause:3.1"}}
 
 apiVersion: apps/v1
 kind: DaemonSet

tests/perf/tests/load/deployment.yaml

@@ -21,7 +21,7 @@ spec:
         svc: {{.SvcName}}-{{.Index}}
     spec:
       containers:
-      - image: k8s.gcr.io/pause:3.1
+      - image: registry.k8s.io/pause:3.1
         name: {{.Name}}
         resources:
           requests:

tests/perf/tests/load/job.yaml

@@ -19,7 +19,7 @@ spec:
       containers:
       - name: {{.Name}}
         # TODO(#799): We should test the "run-to-completion" workflow and hence don't use pause pods.
-        image: k8s.gcr.io/pause:3.1
+        image: registry.k8s.io/pause:3.1
         resources:
           requests:
             cpu: 10m

tests/perf/tests/load/statefulset.yaml

@@ -22,7 +22,7 @@ spec:
     spec:
       containers:
       - name: {{.Name}}
-        image: k8s.gcr.io/pause:3.1
+        image: registry.k8s.io/pause:3.1
         ports:
           - containerPort: 80
             name: web