vscode-python: Allow users to set the timeout for debugger connection. (Debugging with compound launch configs occasionally fails `Timeout Waiting for Debugger...` message)

Environment data

• VS Code version: 1.28.0-insider
• Extension version (available under the Extensions sidebar): 2018.8.0
• OS and version: Windows 10 1803
• Python version (& distribution if applicable, e.g. Anaconda): Python 3.6.3
• Type of virtual environment used (N/A | venv | virtualenv | conda | …): venv
• Relevant/affected Python packages and their versions: nameko-2.11.0

Actual behavior

Debugger often fails with a timeout error when launching more than one project using the nameko framework. A Reload Window must be performed before debugging multiple projects at once will work.

Expected behavior

Debugger should reliably start and enter a debug session for all nameko-based microservice projects.

Steps to reproduce:

1. Create a new workspace
2. Add a folder to the workspace, with a virtual environment (venv)
3. Use pip to install nameko in the project folder
4. Repeat the process with a second project/folder in the workspace
5. Configure the launch.json for each project, adding gevent: true
6. Write a stub service both projects
7. Create a workspace launch configuration which launches both projects
8. Hit F5. With a bit of luck, both projects will start
9. Stop both projects
10. Hit F5 again.
11. Repeat 8-10 until one project fails to start (Timeout waiting for debugger connection message)
12. Hit Ctrl+Shift+P and choose Reload Project Window
13. Hit F5 again - note that both projects start successfully.

Logs

Output for Python in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Python)

##########Linting Output - pylint##########
************* Module service
27,27,error,E1101:Instance of 'RpcProxy' has no 'execute' member
27,8,warning,W0612:Unused variable 'existing_project'
34,24,error,E1136:Value 'self.config' is unsubscriptable
35,8,error,E1101:Instance of 'RpcProxy' has no 'execute' member
39,27,error,E1136:Value 'self.config' is unsubscriptable
40,23,error,E1101:Instance of 'RpcProxy' has no 'get_connection' member

--------------------------------------------------------------------

Your code has been rated at -0.83/10 (previous run: -0.83/10, +0.00)

Output from Console under the Developer Tools panel (toggle Developer Tools on under Help)

TMSyntax.ts:47 Overwriting grammar scope name to file mapping for scope source.ruby.
Old grammar file: file:///c%3A/Users/chris.platts/AppData/Local/Programs/Microsoft%20VS%20Code%20Insiders/resources/app/extensions/ruby/syntaxes/ruby.tmLanguage.json.
New grammar file: file:///c%3A/Users/chris.platts/.vscode-insiders/extensions/rebornix.ruby-0.20.0/syntaxes/ruby.cson.json
e.register @ TMSyntax.ts:47
console.ts:136 [Extension Host] vscode-icons is active! (at activate (C:\Users\chris.platts\.vscode-insiders\extensions\robertohuertasm.vscode-icons-7.27.0\out\src\index.js:44:13))
console.ts:136 [Extension Host] Git extension API method 'getGitPath' is deprecated. (at c.r.value (c:\Users\chris.platts\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\extensions\git\dist\main.js:53:45010))