Add remote_storage_adapter monitoring

Change-Id: I1fc9c77024b67ab2c7a14bc535b0a80f13798bd4
diff --git a/prometheus/server/target/dns.yml b/prometheus/server/target/dns.yml
index ed6602d..e2745f1 100644
--- a/prometheus/server/target/dns.yml
+++ b/prometheus/server/target/dns.yml
@@ -25,3 +25,8 @@
               - 'tasks.monitoring_remote_agent'
               type: A
               port: ${telegraf:remote_agent:output:prometheus_client:bind:port}
+            - name: 'remote_storage_adapter'
+              domain:
+              - 'tasks.monitoring_remote_storage_adapter'
+              type: A
+              port: ${prometheus:remote_storage_adapter:bind:port}