skip flaky test in PyTorch 1.9.0

[Flamefire]

(created using eb --new-pr)

Fixes #16233 reported by @boegel

[Flamefire]

Test created with --stop=patch

Test report by @Flamefire
SUCCESS
Build succeeded for 3 out of 3 (3 easyconfigs in total)
taurusml4 - Linux RHEL 7.6, POWER, 8335-GTX (power9le), 6 x NVIDIA Tesla V100-SXM2-32GB, 440.64.00, Python 2.7.5
See https://gist.github.com/aa1b09974b95129791bc10e9cf8e3763 for a full test report.

[boegel]

@Flamefire Seems like this is also relevant for PyTorch 1.11.0, see easybuilders/easybuild-easyblocks#2794 (comment) (although there we do allow a minimal number of failing tests).

Let's change the PyTorch 1.11.0 easyconfigs in a separate PR though (maybe as a part of #16339), so the test reports are more feasible, successful test report from my side is imminent for this PR...

[Flamefire]

Possible actual fix has been pushed to PyTorch: pytorch/pytorch#86464

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 3 out of 3 (3 easyconfigs in total)
node3305.joltik.os - Linux RHEL 8.4, x86_64, Intel(R) Xeon(R) Gold 6242 CPU @ 2.80GHz (cascadelake), 1 x NVIDIA Tesla V100-SXM2-32GB, 510.85.02, Python 3.6.8
See https://gist.github.com/caa47e4756bf572ebe2422fead5537ac for a full test report.

[boegel]

lgtm

[boegel]

Going in, thanks @Flamefire!