[llvm] [CI] include utils in monolithic scripts (PR #158090)

[Maksim Levental via llvm-commits]

makslevental wrote:

> I'll look at this again when the other patch is ready.

I'm sorry is it somewhere in the charter/rules/guidelines that that's how we're doing PRs now? Typically, quite the opposite occurs - orthogonal changes are requested to be factored out and landed separately when they're independent.

https://github.com/llvm/llvm-project/pull/158090