Fix issue with repeated items in child list.

src/rust/Cargo.lock

@@ -2711,6 +2711,7 @@ dependencies = [
  "env_logger",
  "futures",
  "influxdb2",
+ "itertools 0.11.0",
  "log",
  "lqos_bus",
  "lqos_utils",

src/rust/long_term_stats/pgdb/Cargo.toml

@@ -15,4 +15,5 @@ uuid = { version = "1", features = ["v4", "fast-rng" ] }
 influxdb2 = "0"
 sha2 = "0"
 dashmap = "5"
-lqos_utils = { path = "../../lqos_utils" }
+lqos_utils = { path = "../../lqos_utils" }
+itertools = "0.11.0"

src/rust/long_term_stats/pgdb/src/tree.rs

@@ -1,5 +1,6 @@
 use crate::license::StatsHostError;
 use sqlx::{FromRow, Pool, Postgres, Row};
+use itertools::Itertools;
 
 #[derive(Debug, FromRow)]
 pub struct TreeNode {
@@ -123,7 +124,7 @@ pub async fn get_child_list(
 
     // Add child sites
     let child_sites = sqlx::query(
-        "SELECT site_name, parent, site_type FROM site_tree WHERE key=$1 AND parent=$2",
+        "SELECT DISTINCT site_name, parent, site_type FROM site_tree WHERE key=$1 AND parent=$2",
     )
     .bind(key)
     .bind(site_id)
@@ -162,6 +163,7 @@ pub async fn get_child_list(
     }
 
     result.sort_by(|a, b| a.2.cmp(&b.2));
+    let result = result.into_iter().dedup_by(|a,b| a.2 == b.2).collect();    
 
     Ok(result)
 }