docs: Update deployment and stackset example files (#708)

Currently the Setup section in README will finish in non-working
configuration. This PR updates the stackset and deployment files to
make 'kind' example working.

Signed-off-by: Aleksandr Ponimaskin <[email protected]>

Author: ponimas

docs/deployment.yaml

@@ -20,7 +20,7 @@ spec:
       serviceAccountName: stackset-controller
       containers:
       - name: stackset-controller
-        image: registry.opensource.zalan.do/teapot/stackset-controller:v1.3.37
+        image: registry.opensource.zalan.do/teapot/stackset-controller:v1.4.113
         # please adjust this for your environment
         # the cluster-domain must match the application domain suffix
         # Example application domain: my-app.example.org

docs/stackset.yaml

@@ -21,14 +21,12 @@ spec:
     spec:
       version: v1
       replicas: 3
-      horizontalPodAutoscaler:
+      autoscaler:
         minReplicas: 3
         maxReplicas: 10
         metrics:
-        - type: Resource
-          resource:
-            name: cpu
-            targetAverageUtilization: 50
+        - type: CPU
+          averageUtilization: 50
       podTemplate:
         spec:
           containers: