Merge pull request 'Dropping result in dns_exporter metric' (#1109) from dns_exporter-fix into master

Reviewed-on: https://gitea.obmondo.com/EnableIT/LinuxAid/pulls/1109

Author: ashish1099

modules/enableit/common/data/common.yaml

@@ -338,6 +338,9 @@ common::monitor::prom::server::collect_scrape_jobs:
   - job_name: mtail
   - job_name: filestat
   - job_name: dns
+    metric_relabel_configs:
+      - regex: result
+        action: labeldrop
   - job_name: iptables
   - job_name: tcpshaker
   - job_name: haproxy