qmp-commands: move 'query-named-block-nodes' doc to schema

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
diff --git a/qapi/block-core.json b/qapi/block-core.json
index d1f8155..b37a8b7 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1389,6 +1389,55 @@
 # Returns: the list of BlockDeviceInfo
 #
 # Since: 2.0
+#
+# Example:
+#
+# -> { "execute": "query-named-block-nodes" }
+# <- { "return": [ { "ro":false,
+#                    "drv":"qcow2",
+#                    "encrypted":false,
+#                    "file":"disks/test.qcow2",
+#                    "node-name": "my-node",
+#                    "backing_file_depth":1,
+#                    "bps":1000000,
+#                    "bps_rd":0,
+#                    "bps_wr":0,
+#                    "iops":1000000,
+#                    "iops_rd":0,
+#                    "iops_wr":0,
+#                    "bps_max": 8000000,
+#                    "bps_rd_max": 0,
+#                    "bps_wr_max": 0,
+#                    "iops_max": 0,
+#                    "iops_rd_max": 0,
+#                    "iops_wr_max": 0,
+#                    "iops_size": 0,
+#                    "write_threshold": 0,
+#                    "image":{
+#                       "filename":"disks/test.qcow2",
+#                       "format":"qcow2",
+#                       "virtual-size":2048000,
+#                       "backing_file":"base.qcow2",
+#                       "full-backing-filename":"disks/base.qcow2",
+#                       "backing-filename-format":"qcow2",
+#                       "snapshots":[
+#                          {
+#                             "id": "1",
+#                             "name": "snapshot1",
+#                             "vm-state-size": 0,
+#                             "date-sec": 10000200,
+#                             "date-nsec": 12,
+#                             "vm-clock-sec": 206,
+#                             "vm-clock-nsec": 30
+#                          }
+#                       ],
+#                       "backing-image":{
+#                           "filename":"disks/base.qcow2",
+#                           "format":"qcow2",
+#                           "virtual-size":2048000
+#                       }
+#                    } } ] }
+#
 ##
 { 'command': 'query-named-block-nodes', 'returns': [ 'BlockDeviceInfo' ] }