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/project/project_events.go

@@ -0,0 +1,24 @@
+package project
+
+import (
+	"golang.org/x/net/context"
+
+	"github.com/docker/libcompose/project/events"
+)
+
+// Events listen for real time events from containers (of the project).
+func (p *Project) Events(ctx context.Context, services ...string) (chan events.ContainerEvent, error) {
+	events := make(chan events.ContainerEvent)
+	if len(services) == 0 {
+		services = p.ServiceConfigs.Keys()
+	}
+	// FIXME(vdemeester) handle errors (chan) here
+	for _, service := range services {
+		s, err := p.CreateService(service)
+		if err != nil {
+			return nil, err
+		}
+		go s.Events(ctx, events)
+	}
+	return events, nil
+}