[llvm] Allow specifying libcxx builder image. (PR #110303)

[Michael Buch via llvm-commits]

Michael137 wrote:

> Thanks a lot for chiming in! Side question: I thought ASLR was the problem, so shouldn't the solution be to **turn off** ASLR, i.e. use `settings set target.disable-aslr true`? The Discord thread seems to have slightly conflicting information.

Ah good point. I think what's happening is that we're failing to disable ASLR, hence the recommendation in that thread is to `settings set target.disable-aslr false`. But we don't do that for DAP tests. As Jason pointed out in that thread, having `target.disable-aslr true` isn't very useful in the testsuite, so we should be fine to adopt the same for the DAP tests

https://github.com/llvm/llvm-project/pull/110303