mpiCheckPhaseHook: add parameters to bypass errors in sandbox

[qbisi]

Motivation

OpenMPI get confused by the sandbox environment and spew errors like this (both to stdout and stderr):

      [hwloc/linux] failed to find sysfs cpu topology directory, aborting linux discovery.
      [1729458724.473282] [localhost:78   :0]       tcp_iface.c:893  UCX  ERROR scandir(/sys/class/net) failed: No such file or directory

These messages contaminate test output, which makes the difftest to fail. See nixpkgs#petsc.

The old petsc package use a hardcoded patch to sed the outputs of the test result.
The new solution is to to use a preset cpu topology file and disable ucx model.
(Note: I have tried to set UCX_TLS=sm or UCX_TLS=self, but openucx insist to scan the sysfs directory "/sys/class/net")

# Disable sysfs cpu topology directory discovery.
export PRTE_MCA_hwloc_use_topo_file="@topology@"
# Use the network model ob1 instead of ucx. 
export OMPI_MCA_pml=ob1  

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 24.11 Release Notes (or backporting 23.11 and 24.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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[markuskowa]

LGTM.