feat: DEVOPS-1867 otlp-collector endpoint generation in the node configs

z2/src/chain/node.rs

@@ -939,8 +939,15 @@ impl ChainNode {
         let rendered_template = self.get_config_toml().await?;
         let config_file = rendered_template.as_str();
 
+        // Adding the OpenTelemetry collector endpoint to all nodes configurations
+        let otlp_collector_endpoint = "http://localhost:4317";
+        let config_file_with_otlp = format!(
+            "otlp_collector_endpoint = \"{otlp_collector_endpoint}\"\n{}",
+            config_file
+        );
+
         let mut fh = File::create(filename).await?;
-        fh.write_all(config_file.as_bytes()).await?;
+        fh.write_all(config_file_with_otlp.as_bytes()).await?;
         println!("Configuration file created: {filename}");
 
         Ok(filename.to_owned())

z2/src/validators.rs

@@ -162,7 +162,7 @@ pub async fn gen_validator_startup_script(
 
     if let Some(v) = otlp_collector_endpoint {
         let _ = config.spec.as_table_mut().unwrap().insert(
-            String::from("otlp_collector_endpoints"),
+            String::from("otlp_collector_endpoint"),
             toml::Value::String(v.to_string()),
         );
     }