test-bot --ci-upload: Use remote for Linuxbrew
test-bot --ci-upload: Use remote for Linuxbrew

Use remote rather than default_remote to support
forks of official taps.

hanxue/linuxbrew,hanxue/linuxbrew,maxim-belkin/brew,hanxue/linuxbrew,Linuxbrew/brew,Linuxbrew/brew,rwhogg/brew,rwhogg/brew,Linuxbrew/brew,Linuxbrew/brew,rwhogg/brew,maxim-belkin/brew,maxim-belkin/brew