[pkg-go] golang-github-samalba-dockerclient is marked for autoremoval from testing

[Debian testing autoremoval watch]

golang-github-samalba-dockerclient 0.0~git20160531.0.a303626-2 is marked for autoremoval from testing on 2018-08-09

It (build-)depends on packages with these RC bugs:
902466: golang-github-grpc-ecosystem-go-grpc-prometheus: FTBFS in buster/sid (failing tests)
902467: golang-github-kardianos-osext: FTBFS in buster/sid (failing tests)