fix(cmd/hz): unexpected generated model file path

[3DRX]

using strings.Contains

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Check the PR title.

• [x] This PR title match the format: <type>(optional scope): <description>
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Translate the PR title into Chinese.

解决：生成 model 文件路径不符合预期

More detailed description for this PR(en: English/zh: Chinese).

en: Originally in Plugin.fixGoPackage, we used strings.Contains to decide if the go_package string already contains the top-level package name. Still, as #1154 shows, this can cause trouble when go_package happens to contain a substring that's identical to top level package name. zh: 原有的 Plugin.fixGoPackage 中使用 strings.Contains 来判断 go_package 中是否包含项目包名，但是如 #1154 ，这样会导致路径其他地方包含同样字串时路径错误。

Which issue(s) this PR fixes:

Fixes #1154

[3DRX]

关于测试：plugin_test.go 中 TestFixModelPathAndPackage 内有这段

	for _, r := range ret1 {
		tmp := r[0]
		if !strings.Contains(tmp, plu.Package) {
			if strings.HasPrefix(tmp, "/") {
				tmp = plu.Package + tmp
			} else {
				tmp = plu.Package + "/" + tmp
			}
		}
		result, _ := plu.fixModelPathAndPackage(tmp)
		if result != r[1] {
			t.Fatalf("want go package: %s, but get: %s", r[1], result)
		}
	}

是否应该更新这个测试用例，还是追加一个测试用例。

[Skyenought]

你添加一个测试用例吧

[3DRX]

你添加一个测试用例吧

我提交了一个 commit 把一部分逻辑提到一个函数里使其更好测试，并添加了一组测试用例。

[Skyenought]

@FGYFFFF