Test: Running tunnels must not block Linux or Mac uninstall or update

[aeschli]

Refs: #177226

• Linux @connor4312 apt
• Linux @roblourens snap
• Mac @deepak1556

Complexity: 3

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Test that running tunnels should not block an update or uninstall of VS Code

• install the latest VS Code insiders
• close VS Code, make sure no tunnel is running: From the command prompt run code-insiders tunnel status. It should say no tunnel process is currently running
• start a tunnel server as service from the command prompt: code-insiders tunnel service install. code-insiders tunnel status should show you a running tunnel. The task manager should show the running tunnel (look for code-insiders-tunnel)

1. uninstall should work without issues. Check in the task manager that the process is gone
2. update should also work. The tunnel should not be stopped

[roblourens]

I haven't been able to test the upgrade scenario with a snap, but I'll test it with the real insiders update tomorrow.