Merge pull request #52663 from wwwtyro/rye/s390x-ingress-controller-support

Automatic merge from submit-queue (batch tested with PRs 50988, 50509, 52660, 52663, 52250). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

s390x ingress controller support

**What this PR does / why we need it**: Adds support for an s390x ingress image to the juju kubernetes-worker charm.

**Release note**:
```
Adds support for an s390x ingress image to the juju kubernetes-worker charm.
```

cluster/juju/layers/kubernetes-worker/reactive/kubernetes_worker.py

@@ -567,6 +567,9 @@ def launch_default_ingress_controller():
         return
 
     # Render the ingress replication controller manifest
+    context['ingress_image'] = "gcr.io/google_containers/nginx-ingress-controller:0.9.0-beta.13"
+    if arch() == 's390x':
+        context['ingress_image'] = "docker.io/cdkbot/nginx-ingress-controller-s390x:0.9.0-beta.13"
     manifest = addon_path.format('ingress-replication-controller.yaml')
     render('ingress-replication-controller.yaml', manifest, context)
     hookenv.log('Creating the ingress replication controller.')

cluster/juju/layers/kubernetes-worker/templates/ingress-replication-controller.yaml

@@ -24,7 +24,7 @@ spec:
       # see https://github.com/kubernetes/kubernetes/issues/23920
       hostNetwork: true
       containers:
-      - image: gcr.io/google_containers/nginx-ingress-controller:0.8.3
+      - image: {{ ingress_image }}
         name: nginx-ingress-lb
         imagePullPolicy: Always
         livenessProbe:
@@ -50,4 +50,4 @@ spec:
         args:
         - /nginx-ingress-controller
         - --default-backend-service=$(POD_NAMESPACE)/default-http-backend
-        - --nginx-configmap=$(POD_NAMESPACE)/nginx-load-balancer-conf
+        - --configmap=$(POD_NAMESPACE)/nginx-load-balancer-conf