add patch to fix Open MPI 4.1.5 with PMIx >= 4.2.3

[bartoldeman]

I needed this to use any MPI application with srun with pmix or with plain mpirun, or else I would run into OOB/TCP communication errors for even "mpirun hostname" across two nodes (see open-mpi/ompi#11729
for another user with the same problem). This patch is taken from open-mpi/ompi#11472 and with it, both srun and mpirun run flawlessly without further ado.

[boegel]

@boegelbot please test @ generoso

[boegelbot]

@boegel: Request for testing this PR well received on login1

PR test command 'EB_PR=18833 EB_ARGS= EB_CONTAINER= EB_REPO=easybuild-easyconfigs /opt/software/slurm/bin/sbatch --job-name test_PR_18833 --ntasks=4 ~/boegelbot/eb_from_pr_upload_generoso.sh' executed!

• exit code: 0
• output:

Submitted batch job 11744

Test results coming soon (I hope)...

- notification for comment with ID 1725636581 processed

Message to humans: this is just bookkeeping information for me,
it is of no use to you (unless you think I have a bug, which I don't).

[boegelbot]

Test report by @boegelbot
SUCCESS
Build succeeded for 3 out of 3 (3 easyconfigs in total)
cns2 - Linux Rocky Linux 8.5, x86_64, Intel(R) Xeon(R) CPU E5-2667 v3 @ 3.20GHz (haswell), Python 3.6.8
See https://gist.github.com/boegelbot/a1eb4c484ff6246416c6d269f9ef6f52 for a full test report.

[SebastianAchilles]

@boegelbot please test @ jsc-zen2

[boegelbot]

@SebastianAchilles: Request for testing this PR well received on jsczen2l1.int.jsc-zen2.easybuild-test.cluster

PR test command 'EB_PR=18833 EB_ARGS= EB_REPO=easybuild-easyconfigs /opt/software/slurm/bin/sbatch --mem-per-cpu=4000M --job-name test_PR_18833 --ntasks=8 ~/boegelbot/eb_from_pr_upload_jsc-zen2.sh' executed!

• exit code: 0
• output:

Submitted batch job 3392

Test results coming soon (I hope)...

- notification for comment with ID 1726158115 processed

Message to humans: this is just bookkeeping information for me,
it is of no use to you (unless you think I have a bug, which I don't).

[boegelbot]

Test report by @boegelbot
SUCCESS
Build succeeded for 3 out of 3 (3 easyconfigs in total)
jsczen2g1.int.jsc-zen2.easybuild-test.cluster - Linux Rocky Linux 8.5, x86_64, AMD EPYC 7742 64-Core Processor (zen2), Python 3.6.8
See https://gist.github.com/boegelbot/4e3654c3fc8feff12e01d85cd679de25 for a full test report.

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 3 out of 3 (3 easyconfigs in total)
node3141.skitty.os - Linux RHEL 8.6, x86_64, Intel(R) Xeon(R) Gold 6140 CPU @ 2.30GHz (skylake_avx512), Python 3.6.8
See https://gist.github.com/boegel/f1b417bf9ea85f5d27b4934f8abf55a8 for a full test report.

[boegel]

Going in, thanks @bartoldeman!