enabled, before executing the action.
The DeleteItemAction is not checked, because the DIA doesn't have a
method to get the action's plugin name.
This should be OK, because the CSI will check whether the VS and VSC
have a backup name annotation. If the VS and VSC is not handled by
the CSI plugin, then they don't have the annotation.
Signed-off-by: Xun Jiang <jxun@vmware.com>