Add show_active_toolchain_with_override test
Add show_active_toolchain_with_override test

nodakai/rustup.rs,inejge/rustup.rs,nodakai/rustup.rs,nodakai/rustup.rs,rust-lang/rustup,inejge/rustup.rs,nodakai/rustup.rs,rust-lang/rustup,rust-lang/rustup,rust-lang/rustup,rust-lang/rustup,inejge/rustup.rs,inejge/rustup.rs,nodakai/rustup.rs,inejge/rustup.rs