[FAB-12371]Fix the abac sample to use new cid package

The latest cid package is fabric/core/chaincode/shim/ext/cid.
This CR fixes the abac sample to use the new cid package instead
of the old one at fabric/core/chaincode/lib/cid.
The vendor folder is also updated with the new cid package.

Change-Id: Ifc431ee4504cd009f84f9d5de271721597bba6e7
Signed-off-by: Yuki Kondo <yuki.kondo@hal.hitachi.com>

Author: yuki-kon

chaincode/abac/go/abac.go

@@ -20,7 +20,7 @@ import (
 	"fmt"
 	"strconv"
 
-	"github.com/hyperledger/fabric/core/chaincode/lib/cid"
+	"github.com/hyperledger/fabric/core/chaincode/shim/ext/cid"
 	"github.com/hyperledger/fabric/core/chaincode/shim"
 	pb "github.com/hyperledger/fabric/protos/peer"
 )