make host-build fail when import a new package

[hnxxgwccr]

Description

When I import net package in netplugin/drivers/ovsd/ovsdriver.go

package ovsd

import (
	"encoding/json"
	"errors"
	"fmt"
	**"net"**
	"os"
	"strconv"
	"strings"
	"sync"

	log "github.com/Sirupsen/logrus"
	"github.com/contiv/netplugin/core"
	"github.com/contiv/netplugin/drivers"
	"github.com/contiv/netplugin/netmaster/mastercfg"
	"github.com/contiv/netplugin/netplugin/nameserver"
	"github.com/contiv/netplugin/utils/netutils"
	"github.com/contiv/ofnet"
	"github.com/vishvananda/netlink"
)

make host-build fail, show as:

github.com/contiv/netplugin/vendor/k8s.io/client-go/kubernetes/typed/rbac/v1
github.com/contiv/netplugin/vendor/k8s.io/client-go/kubernetes/typed/rbac/v1alpha1
github.com/contiv/netplugin/vendor/k8s.io/client-go/kubernetes/typed/rbac/v1beta1
github.com/contiv/netplugin/vendor/k8s.io/client-go/kubernetes/typed/scheduling/v1alpha1
github.com/contiv/netplugin/vendor/k8s.io/client-go/kubernetes/typed/settings/v1alpha1
github.com/contiv/netplugin/vendor/k8s.io/client-go/kubernetes/typed/storage/v1
github.com/contiv/netplugin/vendor/k8s.io/client-go/kubernetes/typed/storage/v1beta1
github.com/contiv/netplugin/vendor/k8s.io/client-go/kubernetes
github.com/contiv/netplugin/utils/k8sutils
github.com/contiv/netplugin/netmaster/k8snetwork
make[1]: *** [compile] Error 2
make[1]: Leaving directory `/opt/gopath/src/github.com/contiv/netplugin'
make: *** [host-build] Error 2
[vagrant@netplugin-node1 netplugin]$

No detail infromations, how to solve it?

My building environment is ok, when I change code in netplugin/mgmt/k8splugin/kubeClient.go， make is success.

Thanks.

Expected Behavior

make host-build success.

Observed Behavior

Steps to Reproduce (for bugs)

1. add net package in netplugin/drivers/ovsd/ovsdriver.go
2. make host-build

Your Environment

The building environment is setup according to netplugin/docks/DevEnv.md