Fix k8s StackLight cluster names

Change-Id: I62aa878b582fa24509f0ce8cf9204c2c11c67e93
diff --git a/kubernetes/meta/heka.yml b/kubernetes/meta/heka.yml
index 99015a5..b31e837 100644
--- a/kubernetes/meta/heka.yml
+++ b/kubernetes/meta/heka.yml
@@ -266,7 +266,7 @@
       dimension:
         service: k8s-pool
         nagios_host: 01-service-clusters
-    kube_compute:
+    k8s_pool:
       policy: highest_severity
       alerting: enabled_with_notification
       match:
@@ -275,9 +275,9 @@
       - k8s-kubelet_endpoint
       - k8s-proxy_endpoint
       dimension:
-        cluster_name: k8s-master
+        cluster_name: k8s-pool
         nagios_host: 00-top-clusters
-    kube_control:
+    k8s_master:
       policy: highest_severity
       alerting: enabled_with_notification
       match: