Update traefik dependencies (docker/docker and related) (#1823)

Update traefik dependencies (docker/docker and related)

- Update dependencies
- Fix compilation problems
- Remove vdemeester/docker-events (in docker api now)
- Remove `integration/vendor`
- Use `testImport`
- update some deps.
- regenerate the lock from scratch (after a `glide cc`)

vendor/github.com/docker/libcompose/docker/container/functions.go

@@ -0,0 +1,41 @@
+package container
+
+import (
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/filters"
+	"github.com/docker/docker/client"
+	"golang.org/x/net/context"
+)
+
+// ListByFilter looks up the hosts containers with the specified filters and
+// returns a list of container matching it, or an error.
+func ListByFilter(ctx context.Context, clientInstance client.ContainerAPIClient, containerFilters ...map[string][]string) ([]types.Container, error) {
+	filterArgs := filters.NewArgs()
+
+	// FIXME(vdemeester) I don't like 3 for loops >_<
+	for _, filter := range containerFilters {
+		for key, filterValue := range filter {
+			for _, value := range filterValue {
+				filterArgs.Add(key, value)
+			}
+		}
+	}
+
+	return clientInstance.ContainerList(ctx, types.ContainerListOptions{
+		All:     true,
+		Filters: filterArgs,
+	})
+}
+
+// Get looks up the hosts containers with the specified ID
+// or name and returns it, or an error.
+func Get(ctx context.Context, clientInstance client.ContainerAPIClient, id string) (*types.ContainerJSON, error) {
+	container, err := clientInstance.ContainerInspect(ctx, id)
+	if err != nil {
+		if client.IsErrContainerNotFound(err) {
+			return nil, nil
+		}
+		return nil, err
+	}
+	return &container, nil
+}