au run -o opens 2 chrome tabs

[GimmeDaKitty]

First of all, thank os community you for this awesome framework!

I'm submitting a bug report

• Library Version:
  aurelia-cli v1.0.1

Environment

• Operating System:
  Windows 10

• Node Version:
  v10.15.3

• NPM Version:
  6.9.0

• Browser:
  Chrome Version 75.0.3770.100 (Official Build) (32-bit)

• Language:
  Typescript 3.1

• Loader/bundler:
  Webpack

Current behavior:
When running au run -o chrome opens 2 identical tabs with my aurelia project

• What is the expected behavior?
  I expect aurelia/chrome to open 1 tab with my aurelia project

• What is the motivation / use case for changing the behavior?
  Not a big deal but it is annoying having to close one tab every time

[3cp]

I can reproduce the issue on Windows (not on mac). Don't know what's wrong with webpack-dev-server.

The option is directly passed to webpack-dev-server in aurelia-project/tasks/run.ts

open: project.platform.open || CLIOptions.hasFlag('open'),

[3cp]

@shahabganji found the cause in #1132, it's a duplicated effort in cli.