Added the PrometheusRelayClientTimeout env param for Relay

Change-Id: I3757f2ccb23b2463fc813b49022e958e870c60b7
Related-Bug: PROD-30558
diff --git a/metadata/service/relay/init.yml b/metadata/service/relay/init.yml
index 31608f8..8d6a52b 100644
--- a/metadata/service/relay/init.yml
+++ b/metadata/service/relay/init.yml
@@ -5,8 +5,11 @@
 parameters:
   _param:
     prometheus_relay_bind_port: 8080
+    prometheus_relay_client_timeout: 10
   prometheus:
     relay:
       enabled: true
       bind:
         port: ${_param:prometheus_relay_bind_port}
+      client:
+        timeout: ${_param:prometheus_relay_client_timeout}