Update gce operation timeout

Update gce operation timeout to 2 mins instead of 5 mins. The 90% of
attach/detach disk is less than 15 second, and create volume is less
than 1 min.

Reduce the timeout of volume operation so that it can recover from
previous operation quicker in case operation is dropped.

Author: jingxu97

pkg/gce-cloud-provider/compute/gce-compute.go

@@ -610,6 +610,8 @@ func (cloud *CloudProvider) AttachDisk(ctx context.Context, volKey *meta.Key, re
 	op, err := cloud.service.Instances.AttachDisk(cloud.project, instanceZone, instanceName, attachedDiskV1).Context(ctx).Do()
 	if err != nil {
 		return fmt.Errorf("failed cloud service attach disk call: %v", err)
+	} else {
+		klog.V(5).Infof("Attaching disk %s operation id is ", volKey, op.Name)
 	}
 	err = cloud.waitForZonalOp(ctx, op.Name, instanceZone)
 	if err != nil {
@@ -681,7 +683,7 @@ func (cloud *CloudProvider) waitForZonalOp(ctx context.Context, opName string, z
 	// The v1 API can query for v1, alpha, or beta operations.
 	svc := cloud.service
 	project := cloud.project
-	return wait.Poll(3*time.Second, 5*time.Minute, func() (bool, error) {
+	return wait.Poll(3*time.Second, 2*time.Minute, func() (bool, error) {
 		pollOp, err := svc.ZoneOperations.Get(project, zone, opName).Context(ctx).Do()
 		if err != nil {
 			klog.Errorf("WaitForOp(op: %s, zone: %#v) failed to poll the operation", opName, zone)
@@ -743,7 +745,10 @@ func (cloud *CloudProvider) WaitForAttach(ctx context.Context, volKey *meta.Key,
 }
 
 func opIsDone(op *computev1.Operation) (bool, error) {
-	if op == nil || op.Status != operationStatusDone {
+	if op == nil {
+		return true, fmt.Errorf("operation is nil")
+	}
+	if op.Status != operationStatusDone {
 		return false, nil
 	}
 	if op.Error != nil && len(op.Error.Errors) > 0 && op.Error.Errors[0] != nil {