add DaemonSet targetKind in crd and change label selector

and ignore daemonSetScaleDownNodeSelector in target spec change detection

test/e2e-daemonset.yaml

@@ -0,0 +1,63 @@
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: podinfo
+  namespace: test
+  labels:
+    app: podinfo
+spec:
+  minReadySeconds: 5
+  revisionHistoryLimit: 5
+  selector:
+    matchLabels:
+      app: podinfo
+  template:
+    metadata:
+      annotations:
+        prometheus.io/scrape: "true"
+        prometheus.io/port: "9797"
+      labels:
+        app: podinfo
+    spec:
+      containers:
+      - name: podinfod
+        image: stefanprodan/podinfo:3.1.0
+        imagePullPolicy: IfNotPresent
+        ports:
+          - name: http
+            containerPort: 9898
+            protocol: TCP
+          - name: http-metrics
+            containerPort: 9797
+            protocol: TCP
+          - name: grpc
+            containerPort: 9999
+            protocol: TCP
+        command:
+          - ./podinfo
+          - --port=9898
+          - --port-metrics=9797
+          - --grpc-port=9999
+          - --grpc-service-name=podinfo
+          - --level=info
+          - --random-delay=false
+          - --random-error=false
+        livenessProbe:
+          httpGet:
+            port: 9898
+            path: /healthz
+          initialDelaySeconds: 5
+          timeoutSeconds: 5
+        readinessProbe:
+          httpGet:
+            port: 9898
+            path: /readyz
+          initialDelaySeconds: 5
+          timeoutSeconds: 5
+        resources:
+          limits:
+            cpu: 1000m
+            memory: 128Mi
+          requests:
+            cpu: 1m
+            memory: 16Mi

test/e2e-kubernetes-tests-daemonset.sh

@@ -15,7 +15,7 @@ kubectl apply -k ${REPO_ROOT}/kustomize/tester
 kubectl -n test rollout status deployment/flagger-loadtester
 
 echo '>>> Initialising canary'
-kubectl apply -f ${REPO_ROOT}/test/e2e-workload.yaml
+kubectl apply -f ${REPO_ROOT}/test/e2e-daemonset.yaml
 
 cat <<EOF | kubectl apply -f -
 apiVersion: flagger.app/v1alpha3