[Bug Request] lerna 项目结构开发执行命令报错
## Background
多端和 egg 同在一个仓库下进行管理，用 lerna 管理，以业务为单位进行迭代开发

这个业务驱动的场景个人觉得在 toB 端还是比较普遍的（没有接口版本号一说），如果分开两个或多个仓库，要人为控制分散的版本，日志等一致性

## Proposal
当前通过 lerna run 透穿命令执行子包 egg 项目会报错

![image](https://user-images.githubusercontent.com/37258382/87873124-4cbd5800-c9f1-11ea-9bba-80723fb59e84.png)

之前会抱路径错误，参考 https://github.com/eggjs/egg/issues/3680#issuecomment-519495002 解决了

## Additional context

System:
    OS: macOS Mojave 10.14.6
    CPU: (16) x64 Intel(R) Core(TM) i9-9980HK CPU @ 2.40GHz
    Memory: 12.29 GB / 32.00 GB
    Shell: 5.3 - /bin/zsh
  Binaries:
    Node: 12.18.0 - ~/.nvm/versions/node/v12.18.0/bin/node
    Yarn: 1.22.4 - /usr/local/bin/yarn
    npm: 6.14.4 - ~/.nvm/versions/node/v12.18.0/bin/npm
  Managers:
    CocoaPods: 1.8.4 - /Users/yarnb/.rvm/rubies/ruby-2.3.1/bin/pod
    Gradle: 6.0.1 - /usr/local/bin/gradle
    Homebrew: 2.4.0 - /usr/local/bin/brew
    pip2: 20.2 - /usr/local/bin/pip2
    pip3: 20.1.1 - /usr/local/bin/pip3
    RubyGems: 3.0.6 - /Users/yarnb/.rvm/rubies/ruby-2.3.1/bin/gem
  Utilities:
    CMake: 3.16.2 - /usr/local/bin/cmake
    Make: 3.81 - /usr/bin/make
    GCC: 4.2.1 - /usr/bin/gcc
    Git: 2.21.0 - /usr/bin/git
    Clang: 1100.0.33.16 - /usr/bin/clang
    Mercurial: 5.2 - /usr/local/bin/hg
    Subversion: 1.10.4 - /usr/bin/svn
  Servers:
    Apache: 2.4.34 - /usr/sbin/apachectl
    Nginx: 1.17.6 - /usr/local/bin/nginx
  Virtualization:
    Docker: 19.03.8 - /usr/local/bin/docker
  SDKs:
    iOS SDK:
      Platforms: iOS 13.2, DriverKit 19.0, macOS 10.15, tvOS 13.2, watchOS 6.1
    Android SDK:
      API Levels: 27, 28, 29
      Build Tools: 26.0.2, 27.0.3, 28.0.3, 29.0.2
      System Images: android-28 | Google APIs Intel x86 Atom, android-29 | Google APIs Intel x86 Atom
  IDEs:
    Android Studio: 3.5 AI-191.8026.42.35.6010548
    Emacs: 22.1.1 - /usr/bin/emacs
    Nano: 2.0.6 - /usr/bin/nano
    VSCode: 1.47.0 - /usr/local/bin/code
    Vim: 8.0 - /usr/bin/vim
    Xcode: 11.3/11C29 - /usr/bin/xcodebuild
  Languages:
    Bash: 3.2.57 - /bin/bash
    Java: 1.8.0_232 - /usr/bin/javac
    Perl: 5.18.4 - /usr/bin/perl
    PHP: 7.1.33 - /usr/bin/php
    Python: 2.7.16 - /usr/bin/python
    Python3: 3.7.6 - /usr/local/bin/python3
    Ruby: 2.3.1 - /Users/yarnb/.rvm/rubies/ruby-2.3.1/bin/ruby
  Databases:
    PostgreSQL: 12.1 - /usr/local/bin/postgres
    SQLite: 3.24.0 - /usr/bin/sqlite3
  Browsers:
    Chrome: 84.0.4147.89
    Firefox: 73.0.1
    Safari: 13.1.1
  Monorepos:
    Yarn Workspaces: 1.22.4