Expand quiet checks in update and update-report

[dkav]

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The output from brew update can be voluminous. To reduce what is reported, this pull request expands the --quiet checks in update-report and adds it to update. This follows up on #10581 (comment) and seeks to partially address #10609.

[dkav]

I am not familiar with the code base but it seems that the --quiet check in

brew/Library/Homebrew/cmd/update-report.rb

Line 166 in 4e6840b

elsif !args.preinstall? && !ENV["HOMEBREW_UPDATE_FAILED"]

is redundant as it is bypassed by update. Hence the reason for adding --quiet to update in this pull request.

[MikeMcQuaid]

This makes sense to me. Thanks so much for your first contribution! Without people like you submitting PRs we couldn't run this project. You rock @dkav!