Set 15s timeout for check_opencontrail_ping

Change-Id: Ic5b8c6660648f2a63306277016dd8851559817bc
Related-PROD: PROD-36239
diff --git a/telegraf/meta/telegraf.yml b/telegraf/meta/telegraf.yml
index 5d473bd..3318a0c 100644
--- a/telegraf/meta/telegraf.yml
+++ b/telegraf/meta/telegraf.yml
@@ -54,6 +54,7 @@
       template: telegraf/files/input/exec.conf
       commands: "/usr/local/bin/check_opencontrail_ping.py --host {{ prometheus_address }} --port 15010"
       interval: 45s
+      timeout: 15s
   {%- endif %}
 {%- endif %}