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

[Maksim Levental via llvm-commits]

makslevental wrote:

> > #157944 adds an install test. Also yes the first two are on by default but I thought it better to be explicit.
> 
> What happens to that test if `LLVM_INSTALL_UTILS` is set to false?

The test depends on targets for `FileCheck`, `count`, and `not` 

https://github.com/llvm/llvm-project/blob/main/mlir/examples/standalone/test/CMakeLists.txt#L13

So it fails to configure successfully when run against a distro that doesn't have those targets.

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