Guess linux->linux32 is prudent, especially because Chromium names its bots linux32 and linux (i.e. dropping the 64 which can be equally confusing).

I wonder if this extends to other archs as well? The problem there is that the arch names are deeply hardcoded in our system, e.g. arm vs arm64. arm32 doesn't exist and maybe it wouldn't be wise to have it in the bot names. Though we should properly account for the target_arch on simulators e.g. rename linux_arm to linux32_arm.

Note to self: There is a certain pain in such a change. Two options:
1) Big bang rename. Land CLs in sync to V8 (MB config, CQ config, buildbucket config), build (bot name in recipe, bot name on master/slave, gatekeeper, possibly mail notifier), infra (lkgr-finder) and restart master. V8 side changes to release-branch bots require merge.
2) Do all of the above with a three-way dance. Add new stuff, switch, delete the old stuff.