[pkg-go] docker-registry is marked for autoremoval from testing

[Debian testing autoremoval watch]

docker-registry 2.3.1~ds1-1 is marked for autoremoval from testing on 2016-05-14

It (build-)depends on packages with these RC bugs:
819638: golang-github-armon-gomdb: FTBFS: panic: runtime error: cgo argument has Go pointer to Go pointer
819639: golang-github-gorilla-handlers: FTBFS: compress_test.go:37: wrong content type, got "text/plain; charset=utf-8" want ""
819641: golang-github-jinzhu-gorm: FTBFS: FAIL: TestScannableSlices (0.00s)
819643: golang-github-miekg-pkcs11: FTBFS: TestFindObject (0.00s)