Fix container engine still installed on dedicated etcd node even if...

Fix container engine still installed on dedicated etcd node even if `etcd_deployment_type: host` (#8386)

roles/kubespray-defaults/defaults/main.yaml

@@ -258,7 +258,7 @@ kubelet_shutdown_grace_period: 60s
 kubelet_shutdown_grace_period_critical_pods: 20s
 
 # Whether to deploy the container engine
-deploy_container_engine: inventory_hostname in groups['k8s_cluster'] or etcd_deployment_type != 'host'
+deploy_container_engine: "{{ inventory_hostname in groups['k8s_cluster'] or etcd_deployment_type != 'host' }}"
 
 # Container for runtime
 container_manager: containerd