[pkg-go] golang-github-docker-libnetwork is marked for autoremoval from testing

[Debian testing autoremoval watch]

golang-github-docker-libnetwork 0.7.2~rc.1+dfsg-1 is marked for autoremoval from testing on 2016-12-26

It (build-)depends on packages with these RC bugs:
844074: golang-google-cloud: FTBFS (use of internal package not allowed)