[FAB-6267] fix lscc chaincodename missing when upgrade

If the chaincode name is mistaken or deleted when trying to
upgrade, the error message contains chainName instead of chaincode name.
This changeSet fixes that.

Change-Id: I88aef32c8edb2a5932fd71e4ff4c7de3178806e9
Signed-off-by: Hangyu Li <li.hangyu@jp.fujitsu.com>

core/scc/lscc/lscc.go

@@ -627,7 +627,7 @@ func (lscc *LifeCycleSysCC) executeUpgrade(stub shim.ChaincodeStubInterface, cha
 	// have deleted it
 	cdbytes, _ := lscc.getCCInstance(stub, chaincodeName)
 	if cdbytes == nil {
-		return nil, NotFoundErr(chainName)
+		return nil, NotFoundErr(chaincodeName)
 	}
 
 	//we need the cd to compare the version

core/scc/lscc/lscc_test.go

@@ -760,7 +760,7 @@ func TestUpgrade(t *testing.T) {
 	testUpgrade(t, "example02", "0", "example02", "1", path, "")
 	testUpgrade(t, "example02", "0", "example02", "", path, EmptyVersionErr("example02").Error())
 	testUpgrade(t, "example02", "0", "example02", "0", path, IdenticalVersionErr("example02").Error())
-	testUpgrade(t, "example02", "0", "example03", "1", path, NotFoundErr("test").Error())
+	testUpgrade(t, "example02", "0", "example03", "1", path, NotFoundErr("example03").Error())
 	testUpgrade(t, "example02", "0", "example02", "1{}0", path, InvalidVersionErr("1{}0").Error())
 	testUpgrade(t, "example02", "0", "example*02", "1{}0", path, InvalidChaincodeNameErr("example*02").Error())
 	testUpgrade(t, "example02", "0", "", "1", path, EmptyChaincodeNameErr("").Error())