Add go.mod and go.sum pointing to currently working upstream builds

go.mod

@@ -0,0 +1,27 @@
+module github.com/docker/go-plugins-helpers
+
+go 1.13
+
+require (
+	github.com/Microsoft/go-winio v0.4.15-0.20190919025122-fc70bd9a86b5
+	github.com/Microsoft/hcsshim v0.8.7 // indirect
+	github.com/containerd/containerd v1.3.2 // indirect
+	github.com/containerd/continuity v0.0.0-20200107194136-26c1120b8d41 // indirect
+	github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e
+	github.com/docker/distribution v2.7.1+incompatible // indirect
+	github.com/docker/docker v1.4.2-0.20200123194546-ac058c1629dc
+	github.com/docker/go-connections v0.4.0
+	github.com/gogo/protobuf v1.3.1 // indirect
+	github.com/opencontainers/image-spec v1.0.1 // indirect
+	github.com/opencontainers/runc v1.0.0-rc9.0.20200122160610-2fc03cc11c77 // indirect
+	github.com/opencontainers/runtime-spec v1.0.1 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/sirupsen/logrus v1.4.2 // indirect
+	github.com/stretchr/testify v1.4.0
+	github.com/syndtr/gocapability v0.0.0-20180916011248-d98352740cb2 // indirect
+	github.com/vbatts/tar-split v0.11.1 // indirect
+	golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f // indirect
+	golang.org/x/sys v0.0.0-20200122134326-e047566fdf82 // indirect
+	golang.org/x/tools v0.0.0-20200123194659-2b7b26d7b060 // indirect
+	google.golang.org/grpc v1.26.0 // indirect
+)