How to reproduce:
1. If you have 'cpio installed' at /bin/cpio, remove it by typing `sudo apt-get remove cpio` into your Terminal
2. Reinstall Unity Hub
3. Navigate to the Installs tab and try to add a module to any version

Expected result: Unity Hub installs 'cpio' as it is a dependency
Actual result: Unity Hub doesn't install 'cpio' resulting in modules quietly failing to install

Reproducible with: Hub 2.3.0

Full error in info-log.json after failing to install a module:
{"moduleName":"UnityInstallerLinux","level":"warn","message":" 'Error while installing module Mac Build Support (Mono)',\n { Error: Command failed: cd /home/lukasd/Unity/Hub/Editor/2019.3.0f6; gzip -dc \"/home/lukasd/Unity/Hub/Editor/2019.3.0f6/tmp/TargetSupport.pkg.tmp/Payload\" ","timestamp":"2020-02-21T15:31:58.071Z"}

Notes:
- You can check if you have 'cpio' installed by typing `whereis cpio` in your Terminal
- Workaround is to install 'cpio' by typing `sudo apt-get install cpio`