lib, zebra: Keep `zebra on-rib-process script` in frr.conf

After the change:

```
$ grep on-rib-process /etc/frr/frr.conf
zebra on-rib-process script script4

$ systemctl restart frr

$ vtysh -c 'show run' | grep on-rib-process
zebra on-rib-process script script4
```

Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/lib/frrscript.c b/lib/frrscript.c
index dbae31b666..06460b014d 100644
--- a/lib/frrscript.c
+++ b/lib/frrscript.c
@@ -27,6 +27,16 @@ struct frrscript_names_head frrscript_names_hash;
 
 void _lua_decode_noop(lua_State *L, ...) {}
 
+void frrscript_names_config_write(struct vty *vty)
+{
+	struct frrscript_names_entry *lua_script_entry;
+
+	frr_each (frrscript_names, &frrscript_names_hash, lua_script_entry)
+		if (lua_script_entry->script_name[0] != '\0')
+			vty_out(vty, "zebra on-rib-process script %s\n",
+				lua_script_entry->script_name);
+}
+
 /*
  * Wrapper for frrscript_names_add
  * Use this to register hook calls when a daemon starts up