Move kubemark-100 to us-central

hack/jenkins/job-configs/kubernetes-jenkins/kubernetes-kubemark.yaml

@@ -57,7 +57,7 @@
                 export KUBEMARK_MASTER_SIZE="n1-standard-1"
                 export KUBEMARK_NUM_NODES="5"
         - '100-gce':
-            description: 'Run small-ish kubemark cluster to continously run performance experiments'
+            description: 'Run small-ish kubemark cluster to continuously run performance experiments'
             timeout: 240
             cron-string: 'H H/6 * * *'
             job-env: |
@@ -71,7 +71,7 @@
                 export NUM_NODES="3"
                 export MASTER_SIZE="n1-standard-2"
                 export NODE_SIZE="n1-standard-4"
-                export KUBE_GCE_ZONE="us-east1-d"
+                export KUBE_GCE_ZONE="us-central1-d"
                 export KUBEMARK_MASTER_SIZE="n1-standard-4"
                 export KUBEMARK_NUM_NODES="100"
         - 'high-density-100-gce':