update vendor

Signed-off-by: heartlock <21521209@zju.edu.cn>

Godeps/Godeps.json

@@ -11,6 +11,11 @@
 			"Comment": "v3.0.1",
 			"Rev": "31b736133b98f26d5e078ec9eb591666edfd091f"
 		},
+		{
+			"ImportPath": "github.com/containerd/containerd",
+			"Comment": "v0.2.3-745-gbbeaab5",
+			"Rev": "bbeaab5ee38568daa84b8c233a8067b524588355"
+		},
 		{
 			"ImportPath": "github.com/containerd/containerd/api/services/content",
 			"Comment": "v0.2.3-745-gbbeaab5",
@@ -102,6 +107,11 @@
 			"Comment": "v1.0.0-rc5",
 			"Rev": "035da1dca3dfbb00d752eb58b0b158d6129f3776"
 		},
+		{
+			"ImportPath": "github.com/pkg/errors",
+			"Comment": "v0.8.0",
+			"Rev": "645ef00459ed84a119197bfb8d8205042c6df63d"
+		},
 		{
 			"ImportPath": "github.com/pmezard/go-difflib/difflib",
 			"Comment": "v1.0.0",
@@ -144,6 +154,10 @@
 			"ImportPath": "golang.org/x/net/trace",
 			"Rev": "e90d6d0afc4c315a0d87a568ae68577cc15149a0"
 		},
+		{
+			"ImportPath": "golang.org/x/sys/unix",
+			"Rev": "f3918c30c5c2cb527c0b071a27c35120a6c0719a"
+		},
 		{
 			"ImportPath": "google.golang.org/grpc",
 			"Comment": "v1.0.5",