Make Reflector helpers reusable.

Scheduler uses Reflector from pkg/client/cache.
It defines some helper classes.
I'd like to use those helpers with pkg/client/cache
in kube-proxy and kubelet too.

hack/test-go.sh

@@ -44,9 +44,9 @@ kube::test::find_pkgs() {
 }
 
 # -covermode=atomic becomes default with -race in Go >=1.3
-KUBE_COVER=${KUBE_COVER:--cover -covermode=atomic}
+KUBE_COVER="" #${KUBE_COVER:--cover -covermode=atomic}
 KUBE_TIMEOUT=${KUBE_TIMEOUT:--timeout 120s}
-KUBE_RACE=${KUBE_RACE:--race}
+KUBE_RACE="" #${KUBE_RACE:--race}
 
 kube::test::usage() {
   kube::log::usage_from_stdin <<EOF