Disable flaky tests on mac

[iche033]

Signed-off-by: Ian Chen ichen@osrfoundation.org

🦟 Bug fix

Related to #369 and #253

Summary

These tests have been failing from time to time on macOs.

There was a pull request to address #369 but I think the test still fails on certain graphics card, e.g. Intel HD Graphics 4000 as described in #369

Disabling the tests until we have time to fix them.

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge

[codecov]

Codecov Report

Merging #405 (5be2215) into ign-rendering5 (74f88b7) will decrease coverage by 0.00%.
The diff coverage is n/a.

❗ Current head 5be2215 differs from pull request most recent head a105371. Consider uploading reports for the commit a105371 to get more accurate results

@@                Coverage Diff                 @@
##           ign-rendering5     #405      +/-   ##
==================================================
- Coverage           57.77%   57.77%   -0.01%     
==================================================
  Files                 161      161              
  Lines               15947    15947              
==================================================
- Hits                 9214     9213       -1     
- Misses               6733     6734       +1     

Impacted Files	Coverage Δ
...e/ignition/rendering/base/BaseGaussianNoisePass.hh	96.66% <0.00%> (-3.34%)	⬇️

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