conf,remote: add vcpu-removed domain event

Add a new domain event for completed vCPU removal.

Wire the event through the internal event framework and extend the
remote protocol so remote clients can receive it. Update virsh and
the event-test example accordingly.

The event is not emitted anywhere yet.

Signed-off-by: Akash Kulhalli <akash.kulhalli@oracle.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>

tools/virsh-domain-event.c

@@ -705,6 +705,20 @@ virshEventDeviceRemovalFailedPrint(virConnectPtr conn G_GNUC_UNUSED,
     virshEventPrint(opaque, &buf);
 }
 
+static void
+virshEventVcpuRemovedPrint(virConnectPtr conn G_GNUC_UNUSED,
+                           virDomainPtr dom,
+                           unsigned int vcpuid,
+                           void *opaque)
+{
+    g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
+
+    virBufferAsprintf(&buf,
+                      _("event 'vcpu-removed' for domain '%1$s': vcpu %2$u\n"),
+                      virDomainGetName(dom), vcpuid);
+    virshEventPrint(opaque, &buf);
+}
+
 VIR_ENUM_DECL(virshEventMetadataChangeType);
 VIR_ENUM_IMPL(virshEventMetadataChangeType,
               VIR_DOMAIN_METADATA_LAST,
@@ -873,6 +887,8 @@ virshDomainEventCallback virshDomainEventCallbacks[] = {
       VIR_DOMAIN_EVENT_CALLBACK(virshEventMemoryDeviceSizeChangePrint), },
     { "nic-mac-change",
       VIR_DOMAIN_EVENT_CALLBACK(virshEventNICMACChangePrint), },
+    { "vcpu-removed",
+      VIR_DOMAIN_EVENT_CALLBACK(virshEventVcpuRemovedPrint), },
 };
 G_STATIC_ASSERT(VIR_DOMAIN_EVENT_ID_LAST == G_N_ELEMENTS(virshDomainEventCallbacks));