Bump to go version 1.7 in godeps, some grpc reorganization
Bump to go version 1.7 in godeps, some grpc reorganization

Signed-off-by: Riyaz Faizullabhoy <97794a5efeea78234636d4fba0f499c15a92f5e3@docker.com>

HuKeping/notary,endophage/notary,endophage/notary,johnsandiford/notary,docker/notary,docker/notary,jfrazelle/notary,endophage/notary,andrewhsu/notary,jfrazelle/notary,johnsandiford/notary,andrewhsu/notary,HuKeping/notary,umayr/notary,docker/notary,jfrazelle/notary,vdemeester/notary,vdemeester/notary,umayr/notary,vdemeester/notary,HuKeping/notary,andrewhsu/notary,umayr/notary,johnsandiford/notary