Refactor and improve libcontainer and driver

Remove logging for now because it is complicating things
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)

pkg/libcontainer/nsinit/command.go

@@ -8,8 +8,11 @@ import (
 	"syscall"
 )
 
+// CommandFactory takes the container's configuration and options passed by the
+// parent processes and creates an *exec.Cmd that will be used to fork/exec the
+// namespaced init process
 type CommandFactory interface {
-	Create(container *libcontainer.Container, console, logFile string, syncFd uintptr, args []string) *exec.Cmd
+	Create(container *libcontainer.Container, console string, syncFd uintptr, args []string) *exec.Cmd
 }
 
 type DefaultCommandFactory struct{}
@@ -17,13 +20,12 @@ type DefaultCommandFactory struct{}
 // Create will return an exec.Cmd with the Cloneflags set to the proper namespaces
 // defined on the container's configuration and use the current binary as the init with the
 // args provided
-func (c *DefaultCommandFactory) Create(container *libcontainer.Container, console, logFile string, pipe uintptr, args []string) *exec.Cmd {
+func (c *DefaultCommandFactory) Create(container *libcontainer.Container, console string, pipe uintptr, args []string) *exec.Cmd {
 	// get our binary name so we can always reexec ourself
 	name := os.Args[0]
 	command := exec.Command(name, append([]string{
 		"-console", console,
 		"-pipe", fmt.Sprint(pipe),
-		"-log", logFile,
 		"init"}, args...)...)
 
 	command.SysProcAttr = &syscall.SysProcAttr{