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`)

integration/vendor/github.com/docker/libcompose/project/info.go

@@ -1,53 +0,0 @@
-package project
-
-import (
-	"bytes"
-	"io"
-	"text/tabwriter"
-)
-
-// InfoPart holds key/value strings.
-type InfoPart struct {
-	Key, Value string
-}
-
-// InfoSet holds a list of Info.
-type InfoSet []Info
-
-// Info holds a list of InfoPart.
-type Info []InfoPart
-
-func (infos InfoSet) String(titleFlag bool) string {
-	//no error checking, none of this should fail
-	buffer := bytes.NewBuffer(make([]byte, 0, 1024))
-	tabwriter := tabwriter.NewWriter(buffer, 4, 4, 2, ' ', 0)
-
-	first := true
-	for _, info := range infos {
-		if first && titleFlag {
-			writeLine(tabwriter, true, info)
-		}
-		first = false
-		writeLine(tabwriter, false, info)
-	}
-
-	tabwriter.Flush()
-	return buffer.String()
-}
-
-func writeLine(writer io.Writer, key bool, info Info) {
-	first := true
-	for _, part := range info {
-		if !first {
-			writer.Write([]byte{'\t'})
-		}
-		first = false
-		if key {
-			writer.Write([]byte(part.Key))
-		} else {
-			writer.Write([]byte(part.Value))
-		}
-	}
-
-	writer.Write([]byte{'\n'})
-}