fix(sysctl_tuning): complete fix36 production reconcile and bbr modules-load lifecycle

traffic_core/src/config.rs

@@ -289,6 +289,7 @@ impl Config {
 
     pub fn validate_sysctl_tuning_runtime(&self) -> anyhow::Result<()> {
         self.validate_config()?;
+        self.check_supported_host()?;
 
         if !self.sysctl_tuning.enabled {
             return Ok(());
@@ -742,7 +743,13 @@ swappiness = 1
         let mut cfg = base_config();
         cfg.sysctl_tuning.enabled = false;
         cfg.sysctl_tuning.tcp_bbr = "auto".into();
-        assert!(cfg.validate_sysctl_tuning_runtime().is_ok());
+        if let Err(e) = cfg.validate_sysctl_tuning_runtime() {
+            let msg = e.to_string();
+            assert!(
+                !msg.contains("modprobe"),
+                "validation must not require modprobe when sysctl_tuning is disabled, got error: {msg}"
+            );
+        }
     }
 
     #[test]