add tests for NewFilteredDynamicSharedInformerFactory namespace
add tests for NewFilteredDynamicSharedInformerFactory namespace

Signed-off-by: Wayne Witzel III <witzelw@vmware.com>

Kubernetes-commit: 2064d90e92430f96e440cfc4fc03a69b4243bc6c

kubernetes/client-go,li-ang/client-go