OCPBUGS-83580: Load fuse kernel module before testing /dev/fuse in CRI-O

The OCP-70987 test was failing across multiple CI platforms (AWS, GCP,
vSphere, Metal+IPv6) because /dev/fuse was not available on host nodes
where the fuse kernel module was not loaded. CRI-O silently ignores the
io.kubernetes.cri-o.Devices annotation when the device does not exist
on the host, causing the pod to start without /dev/fuse mounted.

This adds a modprobe fuse step before creating the test pod to ensure
the fuse kernel module is loaded. This is idempotent (no-op if already
loaded) and follows the same pattern used in tap.go for modprobe tun.

Made-with: Cursor

Author: Chandan9112

test/extended/node/node_e2e/node.go

@@ -112,8 +112,18 @@ var _ = g.Describe("[sig-node] [Jira:Node/Kubelet] Kubelet, CRI-O, CPU manager",
 		podName := "pod-devfuse"
 		ns := "devfuse-test"
 
+		g.By("Ensure fuse kernel module is loaded on all worker nodes")
+		nodeNames, err := oc.AsAdmin().WithoutNamespace().Run("get").Args("nodes", "-l", "node-role.kubernetes.io/worker", "-o=jsonpath={.items[*].metadata.name}").Output()
+		o.Expect(err).NotTo(o.HaveOccurred())
+		workers := strings.Fields(nodeNames)
+		o.Expect(workers).NotTo(o.BeEmpty(), "No worker nodes found")
+		for _, worker := range workers {
+			_, err = nodeutils.ExecOnNodeWithChroot(oc, worker, "modprobe", "fuse")
+			o.Expect(err).NotTo(o.HaveOccurred(), "failed to load fuse kernel module on node %s", worker)
+		}
+
 		g.By("Create a test namespace")
-		err := oc.AsAdmin().WithoutNamespace().Run("create").Args("namespace", ns).Execute()
+		err = oc.AsAdmin().WithoutNamespace().Run("create").Args("namespace", ns).Execute()
 		o.Expect(err).NotTo(o.HaveOccurred())
 		defer oc.AsAdmin().WithoutNamespace().Run("delete").Args("namespace", ns, "--ignore-not-found").Execute()