Improved RenderEngine and Mesh coverage

[ahcorde]

Signed-off-by: ahcorde ahcorde@gmail.com

🎉 New feature

Summary

Checklist

• Signed all commits for DCO
• Added tests
• Added example and/or tutorial
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• 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 and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

[codecov]

Codecov Report

Merging #739 (9b60bf4) into ign-rendering3 (3522325) will increase coverage by 0.88%.
The diff coverage is n/a.

@@                Coverage Diff                 @@
##           ign-rendering3     #739      +/-   ##
==================================================
+ Coverage           79.01%   79.89%   +0.88%     
==================================================
  Files                 100      100              
  Lines                7805     7805              
==================================================
+ Hits                 6167     6236      +69     
+ Misses               1638     1569      -69     

Impacted Files	Coverage Δ
...e/ignition/rendering/base/BaseGaussianNoisePass.hh	96.66% <0.00%> (-3.34%)	⬇️
ogre2/src/Ogre2RenderEngine.cc	80.00% <0.00%> (+1.19%)	⬆️
include/ignition/rendering/base/BaseMaterial.hh	64.16% <0.00%> (+10.83%)	⬆️
ogre2/src/Ogre2MeshFactory.cc	82.30% <0.00%> (+11.93%)	⬆️
ogre2/src/Ogre2Mesh.cc	73.33% <0.00%> (+18.33%)	⬆️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.