fix: disable VCS stamping

```sh
go: downloading github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd
error obtaining VCS status: exit status 128
	Use -buildvcs=false to disable VCS stamping.
make: *** [/go/src/github.com/etcd-io/auger/Makefile:67: release-docker-build] Error 1
make: *** [Makefile:55: release] Error 2
```

Makefile

@@ -64,7 +64,7 @@ release:
 # Build used inside docker by 'release'
 release-docker-build:
 	export GOPATH=/go
-	GOOS=$(GOOS) GOARCH=$(GOARCH) CGO_ENABLED=$(CGO_ENABLED) GO111MODULE=on go build
+	GOOS=$(GOOS) GOARCH=$(GOARCH) CGO_ENABLED=$(CGO_ENABLED) GO111MODULE=on go build -buildvcs=false
 
 clean:
 	rm -rf build