added filter for instance

Reviewed-on: http://git.enode/deployer3000/trust-module-backend/pulls/19
Reviewed-by: Vladislav Drozdov <ya2@ya.ru>
Reviewed-by: YurijO <ya@ya.ru>

src/prometheus.service.ts

@@ -124,7 +124,10 @@ export class PrometheusService {
   }
 
   async fetchMetricsRange(metric: string, start: number, end: number, step: number, filters: Record<string, string> = {}): Promise<PrometheusMetric[]> {
-    const query = this.buildFilteredQuery(metric, filters);
+    const query = this.buildFilteredQuery(metric, {
+      ...filters,
+      instance: '192.168.2.34:9050' // Явно фильтруем по нужному instance
+    });
     try {
       const response = await lastValueFrom(
         this.httpService.get(`${this.prometheusUrl}/query_range`, {