Update expected code for http_response

Change-Id: If16d79ff3ce5091d9d5bb3bab3c53a16ccae35ae
diff --git a/heat/meta/telegraf.yml b/heat/meta/telegraf.yml
index 78d3c06..eaa108f 100644
--- a/heat/meta/telegraf.yml
+++ b/heat/meta/telegraf.yml
@@ -5,6 +5,8 @@
     http_response:
       heat-api:
         address: "http://{{ server.bind.api.address|replace('0.0.0.0', '127.0.0.1') }}:8004/"
+        expected_code: 300
       heat-cfn-api:
         address: "http://{{ server.bind.api_cfn.address|replace('0.0.0.0', '127.0.0.1') }}:8000/"
+        expected_code: 300
 {%- endif %}
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