fix gitVersion in makefile

[2456868764]

What type of PR is this?

make gitVersion problem in make file

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

[qmhu]

Would you please provide more information about current problem and how it fix?

[2456868764]

Would you please provide more information about current problem and how it fix?

1. this is version.go code :

`package version

import (
"encoding/json"
"fmt"
"runtime"
)

var (
gitVersion = "crane-%s"
gitCommit = "$Format:%H$" // sha1 from git, output of $(git rev-parse HEAD)
gitTreeState = "" // state of git tree, either "clean" or "dirty"
gitTag = ""
buildDate = "1970-01-01T00:00:00Z" // build date in ISO8601 format, output of $(date -u +'%Y-%m-%dT%H:%M:%SZ')
)

type Version struct {
GitVersion string json:"gitVersion"
GitCommit string json:"gitCommit"
BuildDate string json:"buildDate"
GoVersion string json:"goVersion"
Compiler string json:"compiler"
Platform string json:"platform"
GitTreeState string json:"gitTreeState"
}

func GetVersionInfo() string {
ver := Version{
GitVersion: fmt.Sprintf(gitVersion, gitTag),
GitCommit: gitCommit,
BuildDate: buildDate,
GoVersion: runtime.Version(),
Compiler: runtime.Compiler,
Platform: fmt.Sprintf("%s/%s", runtime.GOOS, runtime.GOARCH),
GitTreeState: gitTreeState,
}
res, _ := json.Marshal(ver)
return string(res)
}`

2. according to code ： ”GitVersion: fmt.Sprintf(gitVersion, gitTag),“
   so gitVersion will be replaced by the current gitTag when it is built, and not started with "crane-".

To fix this bug, gitTag will be replaced when it's built , and gitVersion will be started with "crane-" .