Add checkpoint and restore

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Update go-runc to 49b2a02ec1ed3e4ae52d30b54a291b75

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Add shim to restore creation

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Keep checkpoint path in service

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Add C/R to non-shim build

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Checkpoint rw and image

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Pause container on bind checkpoints

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Return dump.log in error on checkpoint failure

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Pause container for checkpoint

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Update runc to 639454475cb9c8b861cc599f8bcd5c8c790ae402

For checkpoint into to work you need runc version
639454475cb9c8b861cc599f8bcd5c8c790ae402 + and criu 3.0 as this is what
I have been testing with.

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Move restore behind create calls

This remove the restore RPCs in favor of providing the checkpoint
information to the `Create` calls of a container.  If provided, the
container will be created/restored from the checkpoint instead of an
existing container.

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Regen protos after rebase

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

plugin/event.go

@@ -0,0 +1,42 @@
+package plugin
+
+import "time"
+
+type EventType int
+
+func (t EventType) String() string {
+	switch t {
+	case ExitEvent:
+		return "exit"
+	case PausedEvent:
+		return "paused"
+	case CreateEvent:
+		return "create"
+	case StartEvent:
+		return "start"
+	case OOMEvent:
+		return "oom"
+	case ExecAddEvent:
+		return "execAdd"
+	}
+	return "unknown"
+}
+
+const (
+	ExitEvent EventType = iota + 1
+	PausedEvent
+	CreateEvent
+	StartEvent
+	OOMEvent
+	ExecAddEvent
+)
+
+type Event struct {
+	Timestamp  time.Time
+	Type       EventType
+	Runtime    string
+	ID         string
+	Pid        uint32
+	ExitStatus uint32
+	ExitedAt   time.Time
+}