Move timeutils functions to the only places where they are used.

- Move time json marshaling to the jsonlog package: this is a docker
  internal hack that we should not promote as a library.
- Move Timestamp encoding/decoding functions to the API types: This is
  only used there. It could be a standalone library but I don't this
it's worth having a separated repo for this. It could introduce more
complexity than it solves.

Signed-off-by: David Calavera <david.calavera@gmail.com>
Upstream-commit: 27220ecc6b1eedf650ca9cf94965cb0dc2054efd
Component: engine

components/engine/api/server/router/system/system_routes.go

@@ -9,10 +9,10 @@ import (
 	"github.com/docker/docker/api"
 	"github.com/docker/docker/api/server/httputils"
 	"github.com/docker/docker/api/types"
+	timetypes "github.com/docker/docker/api/types/time"
 	"github.com/docker/docker/pkg/ioutils"
 	"github.com/docker/docker/pkg/jsonmessage"
 	"github.com/docker/docker/pkg/parsers/filters"
-	"github.com/docker/docker/pkg/timeutils"
 	"golang.org/x/net/context"
 )
 
@@ -46,11 +46,11 @@ func (s *systemRouter) getEvents(ctx context.Context, w http.ResponseWriter, r *
 	if err := httputils.ParseForm(r); err != nil {
 		return err
 	}
-	since, sinceNano, err := timeutils.ParseTimestamps(r.Form.Get("since"), -1)
+	since, sinceNano, err := timetypes.ParseTimestamps(r.Form.Get("since"), -1)
 	if err != nil {
 		return err
 	}
-	until, untilNano, err := timeutils.ParseTimestamps(r.Form.Get("until"), -1)
+	until, untilNano, err := timetypes.ParseTimestamps(r.Form.Get("until"), -1)
 	if err != nil {
 		return err
 	}