Replace execdrivers with containerd implementation

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>
Signed-off-by: Anusha Ragunathan <anusha@docker.com>

libcontainerd/container.go

@@ -0,0 +1,38 @@
+package libcontainerd
+
+import (
+	"fmt"
+
+	"github.com/docker/docker/restartmanager"
+)
+
+const (
+	// InitFriendlyName is the name given in the lookup map of processes
+	// for the first process started in a container.
+	InitFriendlyName = "init"
+	configFilename   = "config.json"
+)
+
+type containerCommon struct {
+	process
+	restartManager restartmanager.RestartManager
+	restarting     bool
+	processes      map[string]*process
+}
+
+// WithRestartManager sets the restartmanager to be used with the container.
+func WithRestartManager(rm restartmanager.RestartManager) CreateOption {
+	return restartManager{rm}
+}
+
+type restartManager struct {
+	rm restartmanager.RestartManager
+}
+
+func (rm restartManager) Apply(p interface{}) error {
+	if pr, ok := p.(*container); ok {
+		pr.restartManager = rm.rm
+		return nil
+	}
+	return fmt.Errorf("WithRestartManager option not supported for this client")
+}