vty: set name for VIEW+ENABLE nodes, for VTY reference

This leaves no unnamed chapters in future VTY reference documents.

Change-Id: Iefb8b78094208a1a4c5d70bd6c69a3deca8da54f
diff --git a/src/vty/command.c b/src/vty/command.c
index 55284ee..71f6a71 100644
--- a/src/vty/command.c
+++ b/src/vty/command.c
@@ -68,21 +68,25 @@
 struct cmd_node auth_node = {
 	AUTH_NODE,
 	"Password: ",
+	.name = "auth",
 };
 
 struct cmd_node view_node = {
 	VIEW_NODE,
 	"%s> ",
+	.name = "view",
 };
 
 struct cmd_node auth_enable_node = {
 	AUTH_ENABLE_NODE,
 	"Password: ",
+	.name = "auth-enable",
 };
 
 struct cmd_node enable_node = {
 	ENABLE_NODE,
 	"%s# ",
+	.name = "enable",
 };
 
 struct cmd_node config_node = {