fix: openkruise health check npe error #19545 (#19660)

* test: add broken unit test data

Signed-off-by: Jingchao <alswlx@gmail.com>

* fix: npe error in kruise ds health-check

Signed-off-by: Jingchao <alswlx@gmail.com>

---------

Signed-off-by: Jingchao <alswlx@gmail.com>

resource_customizations/apps.kruise.io/DaemonSet/health.lua

@@ -8,7 +8,7 @@ if obj.status ~= nil then
             hs.status = "Suspended"
             hs.message = "Daemonset is paused"
             return hs
-        elseif obj.spec.updateStrategy.rollingUpdate.partition ~= 0 and obj.metadata.generation > 1 then
+        elseif (obj.spec.updateStrategy.rollingUpdate.partition ~= nil) and (obj.spec.updateStrategy.rollingUpdate.partition ~= 0 and obj.metadata.generation > 1) then
             if obj.status.updatedNumberScheduled > (obj.status.desiredNumberScheduled - obj.spec.updateStrategy.rollingUpdate.partition) then
                 hs.status = "Suspended"
                 hs.message = "Daemonset needs manual intervention"

resource_customizations/apps.kruise.io/DaemonSet/health_test.yaml

@@ -11,6 +11,10 @@ tests:
       status: Progressing
       message: "Waiting for initialization"
     inputPath: testdata/unknown.yaml
+  - healthStatus:
+      status: Progressing
+      message: "Waiting for initialization"
+    inputPath: testdata/no-update-strategy-partition.yaml
   - healthStatus:
       status: Suspended
       message: "Daemonset is paused"

resource_customizations/apps.kruise.io/DaemonSet/testdata/no-update-strategy-partition.yaml

@@ -0,0 +1,34 @@
+apiVersion: apps.kruise.io/v1alpha1
+kind: DaemonSet
+metadata:
+  name: rdma-device-plugin
+  namespace: nvidia-gpu
+  generation: 2
+spec:
+  selector:
+    matchLabels:
+      app-name: rdma-device-plugin-pod
+  template:
+    metadata:
+      labels:
+        app-name: rdma-device-plugin-pod
+    spec:
+      containers:
+          image: 'my-k8s-rdmaplugin'
+          imagePullPolicy: IfNotPresent
+          name: k8s-rdma-device-plugin
+      hostNetwork: true
+  updateStrategy:
+    rollingUpdate:
+      maxSurge: 0
+      maxUnavailable: 50
+      rollingUpdateType: Standard
+    type: RollingUpdate
+status:
+  currentNumberScheduled: 0
+  daemonSetHash: 5998d4d4d7
+  desiredNumberScheduled: 0
+  numberMisscheduled: 0
+  numberReady: 0
+  observedGeneration: 2
+  updatedNumberScheduled: 0