Makefile: generate license bom when vendoring
Makefile: generate license bom when vendoring

kubernetes-incubator/bootkube,hongchaodeng/bootkube,ericchiang/bootkube,diegs/bootkube,dghubble/bootkube,kubernetes-incubator/bootkube,dghubble/bootkube,hongchaodeng/bootkube,ericchiang/bootkube,diegs/bootkube,hongchaodeng/bootkube,diegs/bootkube,ericchiang/bootkube,dghubble/bootkube,kubernetes-incubator/bootkube