* **Improvements**
+ * virsh: Allow XML validation for define of: storage pool, network, secret,
+ nwfilter, interface
+
+ * Add flag ``VIR_STORAGE_POOL_DEFINE_VALIDATE`` to validate storage pool
+ input xml. For virsh, users can use it as ``virsh pool-define --validate``.
+ * Add flag ``VIR_NETWORK_DEFINE_VALIDATE`` to validate network input xml. For
+ virsh, users can use it as ``net-define --validate``.
+ * Add flag ``VIR_SECRET_DEFINE_VALIDATE`` to validate secret input xml. For
+ virsh, users can use it as ``secret-define --validate``.
+ * Add flag ``VIR_NWFILTER_DEFINE_VALIDATE`` to validate nwfilter input xml.
+ For virsh, users can use it as ``nwfilter-define --validate``.
+ * Add flag ``VIR_INTERFACE_DEFINE_VALIDATE`` to validate interface input xml.
+ For virsh, users can use it as ``iface-define --validate``.
+
* **Bug fixes**