qemu: capabilities: Add capability for the 'flat' argument of 'query-named-block-nodes'

Detect the presence of the flag and make it available internally as
QEMU_CAPS_QMP_QUERY_NAMED_BLOCK_NODES_FLAT.
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>
Reviewed-by: NJán Tomko <jtomko@redhat.com>

src/qemu/qemu_capabilities.c

@@ -564,6 +564,7 @@ VIR_ENUM_IMPL(virQEMUCaps,
 
               /* 355 */
               "vhost-user-fs",
+              "query-named-block-nodes.flat",
     );
 
 
@@ -1440,6 +1441,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsQMPSchemaQueries[] = {
     { "blockdev-add/arg-type/+file/$dynamic-auto-read-only", QEMU_CAPS_BLOCK_FILE_AUTO_READONLY_DYNAMIC },
     { "human-monitor-command/$savevm-monitor-nodes", QEMU_CAPS_SAVEVM_MONITOR_NODES },
     { "blockdev-add/arg-type/+nvme", QEMU_CAPS_DRIVE_NVME },
+    { "query-named-block-nodes/arg-type/flat", QEMU_CAPS_QMP_QUERY_NAMED_BLOCK_NODES_FLAT },
 };
 
 typedef struct _virQEMUCapsObjectTypeProps virQEMUCapsObjectTypeProps;

src/qemu/qemu_capabilities.h

@@ -545,6 +545,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */
 
     /* 355 */
     QEMU_CAPS_DEVICE_VHOST_USER_FS, /* -device vhost-user-fs */
+    QEMU_CAPS_QMP_QUERY_NAMED_BLOCK_NODES_FLAT, /* query-named-block-nodes supports the 'flat' option */
 
     QEMU_CAPS_LAST /* this must always be the last item */
 } virQEMUCapsFlags;

tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml

@@ -224,6 +224,7 @@
   <flag name='rng-builtin'/>
   <flag name='virtio-net.failover'/>
   <flag name='vhost-user-fs'/>
+  <flag name='query-named-block-nodes.flat'/>
   <version>4002050</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100241</microcodeVersion>