Bot comments three times on V8 CI

[targos]

Example: nodejs/node#45162 (comment)

Can we make it comment on the top-level job instead of the three subjobs?

[targos]

/cc @gengjiawen

[gengjiawen]

This is introduced in #353, not sure the best way to fix it.

[joyeecheung]

It seems the bot only got three events for each of the subjobs, so there isn't an event for the parent job. Either we reconfigure Jenkins so that it triggers subjobs as real subjobs (instead of the same job but with different configuration?), or the bot needs to know how to merge the CI links.

[gengjiawen]

Either we reconfigure Jenkins so that it triggers subjobs as real subjobs (instead of the same job but with different configuration?)

I am for this one, as long as we can keep the same url and config.
Context: nodejs/node-core-utils@046bc0d.