Set karpenter dns policy to default, lower requests and remove cpu limits

tests/integration/update_cluster/karpenter/data/aws_s3_bucket_object_minimal.example.com-addons-bootstrap_content

@@ -54,7 +54,7 @@ spec:
     version: 9.99.0
   - id: k8s-1.19
     manifest: karpenter.sh/k8s-1.19.yaml
-    manifestHash: aa53e65325a4e3d28c9374f8910c0c359880c3654b1612a35f0a626c718cea5b
+    manifestHash: 45610f3413287dd87de888b7dbbe31931a10f7125aec6ee88516d0d92c9494b4
     name: karpenter.sh
     selector:
       k8s-addon: karpenter.sh

tests/integration/update_cluster/karpenter/data/aws_s3_bucket_object_minimal.example.com-addons-karpenter.sh-k8s-1.19_content

@@ -644,15 +644,15 @@ spec:
             port: 8081
         resources:
           limits:
-            cpu: "1"
             memory: 1Gi
           requests:
-            cpu: "1"
+            cpu: 500m
             memory: 1Gi
         volumeMounts:
         - mountPath: /var/run/secrets/amazonaws.com/
           name: token-amazonaws-com
           readOnly: true
+      dnsPolicy: Default
       priorityClassName: system-cluster-critical
       securityContext:
         fsGroup: 10001

upup/models/cloudup/resources/addons/karpenter.sh/k8s-1.19.yaml.template

@@ -439,15 +439,15 @@ spec:
     spec:
       priorityClassName: system-cluster-critical
       serviceAccountName: karpenter
+      dnsPolicy: Default
       containers:
         - name: manager
           image: public.ecr.aws/karpenter/controller:v0.5.3
           resources: 
             limits:
-              cpu: 1
               memory: 1Gi
             requests:
-              cpu: 1
+              cpu: 500m
               memory: 1Gi
           ports:
             - name: metrics