Missing support for global variable with initialization

[VincenzoArceri]

At 82cad83, tests testCpuUse and testCpuUseNI are ignored and do not pass due to missing support for global variable with initialization. For example, in go-lisa/go-testcases/cc/cpu-use.go:

package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"time"

	"github.com/hyperledger/fabric-chaincode-go/shim"
	pb "github.com/hyperledger/fabric-protos-go/peer"
)

//SimpleChaincode is the artifact of teh chaincode
type SimpleChaincode struct {
}

var nameSpace string = "org.cpu-use.Usage"  // global variable with initializaiton
...