Description of problem: Observability addon deploy failed on GKE cluster

Version-Release number of selected component (if applicable): 2.8.0-DOWNSTREAM-2023-05-04-15-35-38

How reproducible:

Steps to Reproduce:

1. Deploy MCOCR 
2. import one GKE cluster into the Hub
3. Other addon deployed successful, but Observability deploy failed. There are some errors in the endpoint pod
   ```
   1.6832761642667983e+09  ERROR   controllers.ObservabilityAddon  Failed to deploy DaemonSet open-cluster-management-addon-observability/node-exporter    {"Request.Namespace": "open-cluster-management-addon-observability", "Request.Name": "images-list", "error": "admission webhook \"gkepolicy.common-webhooks.networking.gke.io\" denied the request: GKE Warden rejected the request because it violates one or more constraints.\nViolations details: {\"[denied by autogke-disallow-hostnamespaces]\":[\"enabling hostPID is not allowed in Autopilot.\",\"enabling hostNetwork is not allowed in Autopilot.\"],\"[denied by autogke-no-host-port]\":[\"container kube-rbac-proxy specifies host ports [9100], which are disallowed in Autopilot.\"],\"[denied by autogke-no-write-mode-hostpath]\":[\"hostPath volume sys used in container node-exporter uses path /sys which is not allowed in Autopilot. Allowed path prefixes for hostPath volumes are: [/var/log/].\",\"hostPath volume root used in container node-exporter uses path / which is not allowed in Autopilot. Allowed path prefixes for hostPath volumes are: [/var/log/].\"]}

   \nRequested by user: 'system:serviceaccount:open-cluster-management-addon-observability:endpoint-observability-operator-sa', groups: 'system:serviceaccounts,system:serviceaccounts:open-cluster-management-addon-observability,system:authenticated'."}
   sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Reconcile
           /remote-source/deps/gomod/pkg/mod/sigs.k8s.io/controller-runtime@v0.11.0/pkg/internal/controller/controller.go:114
   sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler
           /remote-source/deps/gomod/pkg/mod/sigs.k8s.io/controller-runtime@v0.11.0/pkg/internal/controller/controller.go:311
   sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem
           /remote-source/deps/gomod/pkg/mod/sigs.k8s.io/controller-runtime@v0.11.0/pkg/internal/controller/controller.go:266
   sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func2.2
           /remote-source/deps/gomod/pkg/mod/sigs.k8s.io/controller-runtime@v0.11.0/pkg/internal/controller/controller.go:2271.6832761642669027e+09  ERROR   controller.observabilityaddon   Reconciler error        {"reconciler group": "observability.open-cluster-management.io", "reconciler kind": "ObservabilityAddon", "name": "images-list", "namespace": "open-cluster-management-addon-observability", "error": "admission webhook \"gkepolicy.common-webhooks.networking.gke.io\" denied the request: GKE Warden rejected the request because it violates one or more constraints.\nViolations details:

   {\"[denied by autogke-disallow-hostnamespaces]\":[\"enabling hostPID is not allowed in Autopilot.\",\"enabling hostNetwork is not allowed in Autopilot.\"],\"[denied by autogke-no-host-port]\":[\"container kube-rbac-proxy specifies host ports [9100], which are disallowed in Autopilot.\"],\"[denied by autogke-no-write-mode-hostpath]\":[\"hostPath volume sys used in container node-exporter uses path /sys which is not allowed in Autopilot. Allowed path prefixes for hostPath volumes are: [/var/log/].\",\"hostPath volume root used in container node-exporter uses path / which is not allowed in Autopilot. Allowed path prefixes for hostPath volumes are: [/var/log/].\"]}

   \nRequested by user: 'system:serviceaccount:open-cluster-management-addon-observability:endpoint-observability-operator-sa', groups: 'system:serviceaccounts,system:serviceaccounts:open-cluster-management-addon-observability,system:authenticated'."}
   sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem
           /remote-source/deps/gomod/pkg/mod/sigs.k8s.io/controller-runtime@v0.11.0/pkg/internal/controller/controller.go:266
   sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func2.2
           /remote-source/deps/gomod/pkg/mod/sigs.k8s.io/controller-runtime@v0.11.0/pkg/internal/controller/controller.go:227
   ```

Actual results:

Expected results:

Additional info: