Enable load test in Kubemark100

hack/jenkins/e2e.sh

@@ -516,7 +516,7 @@ case ${JOB_NAME} in
     : ${E2E_DOWN:="true"}
     : ${E2E_TEST:="false"}
     : ${USE_KUBEMARK:="true"}
-    : ${KUBEMARK_TESTS:="should\sallow\sstarting\s30\spods\sper\snode"}
+    : ${KUBEMARK_TESTS:="\[Feature:Performance\]"}
     # Override defaults to be indpendent from GCE defaults and set kubemark parameters
     KUBE_GCE_INSTANCE_PREFIX="kubemark100"
     NUM_NODES="10"