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>

api/client/lib/events.go

@@ -6,8 +6,8 @@ import (
 	"time"
 
 	"github.com/docker/docker/api/types"
+	timetypes "github.com/docker/docker/api/types/time"
 	"github.com/docker/docker/pkg/parsers/filters"
-	"github.com/docker/docker/pkg/timeutils"
 )
 
 // Events returns a stream of events in the daemon in a ReadCloser.
@@ -17,14 +17,14 @@ func (cli *Client) Events(options types.EventsOptions) (io.ReadCloser, error) {
 	ref := time.Now()
 
 	if options.Since != "" {
-		ts, err := timeutils.GetTimestamp(options.Since, ref)
+		ts, err := timetypes.GetTimestamp(options.Since, ref)
 		if err != nil {
 			return nil, err
 		}
 		query.Set("since", ts)
 	}
 	if options.Until != "" {
-		ts, err := timeutils.GetTimestamp(options.Until, ref)
+		ts, err := timetypes.GetTimestamp(options.Until, ref)
 		if err != nil {
 			return nil, err
 		}

api/client/lib/logs.go

@@ -6,7 +6,7 @@ import (
 	"time"
 
 	"github.com/docker/docker/api/types"
-	"github.com/docker/docker/pkg/timeutils"
+	timetypes "github.com/docker/docker/api/types/time"
 )
 
 // ContainerLogs returns the logs generated by a container in an io.ReadCloser.
@@ -22,7 +22,7 @@ func (cli *Client) ContainerLogs(options types.ContainerLogsOptions) (io.ReadClo
 	}
 
 	if options.Since != "" {
-		ts, err := timeutils.GetTimestamp(options.Since, time.Now())
+		ts, err := timetypes.GetTimestamp(options.Since, time.Now())
 		if err != nil {
 			return nil, err
 		}