add coverage for case when []string exists (#2174)
add coverage for case when []string exists (#2174)


jboyd01/service-catalog,kubernetes-sigs/service-catalog,jboyd01/service-catalog,kubernetes-sigs/service-catalog,kubernetes-sigs/service-catalog,kubernetes-incubator/service-catalog,MHBauer/service-catalog,MHBauer/service-catalog,kubernetes-incubator/service-catalog,jboyd01/service-catalog,MHBauer/service-catalog,kubernetes-sigs/service-catalog,kubernetes-incubator/service-catalog,kubernetes-incubator/service-catalog,kubernetes-incubator/service-catalog,kubernetes-sigs/service-catalog,MHBauer/service-catalog,jboyd01/service-catalog,kubernetes-incubator/service-catalog,MHBauer/service-catalog,kubernetes-sigs/service-catalog,jboyd01/service-catalog,jboyd01/service-catalog,MHBauer/service-catalog