ci: k8s: Replace nginx alpine images

The previous ones are gone, so let's switch to our own multi-arch image
for the tests.

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

tests/integration/kubernetes/runtimeclass_workloads/k8s-policy-rc.yaml

@@ -21,7 +21,7 @@ spec:
       runtimeClassName: kata
       containers:
       - name: nginxtest
-        image: quay.io/sjenning/${nginx_version}
+        image: quay.io/fidencio/${nginx_version}
         ports:
         - containerPort: 80
         volumeMounts:

tests/integration/kubernetes/runtimeclass_workloads/lifecycle-events.yaml

@@ -13,7 +13,7 @@ spec:
   runtimeClassName: kata
   containers:
   - name: handlers-container
-    image: quay.io/sjenning/${nginx_version}
+    image: quay.io/fidencio/${nginx_version}
     lifecycle:
       postStart:
         exec:

tests/integration/kubernetes/runtimeclass_workloads/nginx-deployment.yaml

@@ -21,6 +21,6 @@ spec:
       runtimeClassName: kata
       containers:
       - name: nginx
-        image: quay.io/sjenning/${nginx_version}
+        image: quay.io/fidencio/${nginx_version}
         ports:
         - containerPort: 80

tests/integration/kubernetes/runtimeclass_workloads/replication-controller.yaml

@@ -21,6 +21,6 @@ spec:
       runtimeClassName: kata
       containers:
       - name: nginxtest
-        image: quay.io/sjenning/${nginx_version}
+        image: quay.io/fidencio/${nginx_version}
         ports:
         - containerPort: 80