pool: rbd cmd shouldn't use admin in external mode

when creating networkFence, rbd command was loading
admin config and hence running rbd command use client.admin
in case of external cluster also. With this commit instead
of client.admin user it will use what is being passed to
config.

Signed-off-by: subhamkrai <srai@redhat.com>
(cherry picked from commit ef4dd76df1)

pkg/operator/ceph/cluster/watcher.go

@@ -219,7 +219,10 @@ func (c *clientCluster) fenceNode(ctx context.Context, node *corev1.Node, cluste
 		return nil
 	}
 
-	clusterInfo := cephclient.AdminClusterInfo(ctx, cluster.Namespace, cluster.Name)
+	clusterInfo, _, _, err := opcontroller.LoadClusterInfo(c.context, ctx, cluster.Namespace, &cluster.Spec)
+	if err != nil {
+		return pkgerror.Wrapf(err, "Failed to load cluster info.")
+	}
 
 	for i := range rbdPVList {
 		err = c.fenceRbdImage(ctx, node, cluster, clusterInfo, rbdPVList[i])

pkg/operator/ceph/cluster/watcher_test.go

@@ -271,7 +271,24 @@ func TestHandleNodeFailure(t *testing.T) {
 		},
 	}
 
-	_, err := c.context.Clientset.CoreV1().PersistentVolumes().Create(ctx, pv, metav1.CreateOptions{})
+	// Mock clusterInfo
+	secrets := map[string][]byte{
+		"fsid":         []byte("c47cac40-9bee-4d52-823b-ccd803ba5bfe"),
+		"mon-secret":   []byte("monsecret"),
+		"admin-secret": []byte("adminsecret"),
+	}
+	secret := &corev1.Secret{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      "rook-ceph-mon",
+			Namespace: ns,
+		},
+		Data: secrets,
+		Type: k8sutil.RookType,
+	}
+	_, err := c.context.Clientset.CoreV1().Secrets(ns).Create(ctx, secret, metav1.CreateOptions{})
+	assert.NoError(t, err)
+
+	_, err = c.context.Clientset.CoreV1().PersistentVolumes().Create(ctx, pv, metav1.CreateOptions{})
 	assert.NoError(t, err)
 
 	_, err = c.context.ApiExtensionsClient.ApiextensionsV1().CustomResourceDefinitions().Create(ctx, &v1.CustomResourceDefinition{ObjectMeta: metav1.ObjectMeta{Name: "networkfences.csiaddons.openshift.io"}}, metav1.CreateOptions{})