gobgp docker image is borked

[rhicks]

The gobgpd command does not build.

See:
https://hub.docker.com/r/osrg/gobgp/builds/
https://hub.docker.com/r/osrg/gobgp/builds/bpqrxxq6dzmwuqfjwvkl98d/

Specifically:
---> Running in 1e6cbf33bdda

�[91mpackage github.com/osrg/gobgp/gobgp: cannot find package "github.com/osrg/gobgp/gobgp" in any of:
	/usr/local/go/src/github.com/osrg/gobgp/gobgp (from $GOROOT)
	/go/src/github.com/osrg/gobgp/gobgp (from $GOPATH)
�[0m
Removing intermediate container 1e6cbf33bdda

The command '/bin/sh -c go get github.com/osrg/gobgp/gobgp' returned a non-zero code: 1