Log each operation and keep schtum during execution.
Log each operation and keep schtum during execution.

This commit simplifies the output of provisioning scripts by
muting all unwanted junk (e.g., progress, etc.) and only printing
out essential messages (e.g., warnings, notices, etc.)

`apt-get` commands have also been simplified to use
`apt-non-interactive` which properly sets up non-interactive mode
and defaults.

'-q' or '--quiet' is often used to supress annoying messages.

StanAngeloff/vagrant-shell-scripts,StanAngeloff/vagrant-shell-scripts