add support for defining global host info

Change the '*' in the node info update cmd to refer to host info instead

Signed-off-by: Felix Fietkau <nbd@nbd.name>

node.h

@@ -70,6 +70,7 @@ struct usteer_remote_host {
 	struct avl_node avl;
 
 	struct list_head nodes;
+	struct blob_attr *host_info;
 	char *addr;
 };