fix the issue of start container failed after restore pod

It's needed to reload sandbox before containers, since
the container's reload needs the sandbox.

Signed-off-by: Fupan Li <lifupan@gmail.com>

Author: lifupan

daemon/pod/persist.go

@@ -108,12 +108,6 @@ func LoadXPod(factory *PodFactory, layout *types.PersistPodLayout) (*XPod, error
 		}
 	}
 
-	for _, cid := range layout.Containers {
-		if err = p.loadContainer(cid); err != nil {
-			return nil, err
-		}
-	}
-
 	err = p.loadSandbox()
 	if err != nil {
 		if !strings.Contains(err.Error(), "leveldb: not found") {
@@ -123,6 +117,12 @@ func LoadXPod(factory *PodFactory, layout *types.PersistPodLayout) (*XPod, error
 		p.status = S_POD_STOPPED
 	}
 
+	for _, cid := range layout.Containers {
+		if err = p.loadContainer(cid); err != nil {
+			return nil, err
+		}
+	}
+
 	// if sandbox is running, set all volume INSERTED
 	if p.status == S_POD_RUNNING {
 		for _, v := range p.volumes {