Update test configuration to use ogre2

[iche033]

see gazebosim/gz-sim#14

May need to fix CI...

[codecov]

Codecov Report

Merging #83 into ign-rendering3 will not change coverage.
The diff coverage is n/a.

@@              Coverage Diff               @@
##           ign-rendering3     #83   +/-   ##
==============================================
  Coverage            7.81%   7.81%           
==============================================
  Files                  25      25           
  Lines                1689    1689           
==============================================
  Hits                  132     132           
  Misses               1557    1557           

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[chapulina]

Interesting that no ogre2 files are showing on the coverage report: https://codecov.io/gh/ignitionrobotics/ign-rendering/tree/17af7b8296830b2f45e165a432611ed2ef855ccc/src

[iche033]

ok CI should be working. More tests are passing on windows compared to ogre 1.x even though there are still issues with loading the render engine plugin.

[chapulina]

Should we try to address the new test failure on homebrew?

https://build.osrfoundation.org/job/ignition_rendering-ci-pr_any-homebrew-amd64/666/testReport/junit/(root)/DepthCamera_DepthCameraTest/DepthCameraBoxes_ogre2/

ign-rendering3 has a clean track record: https://build.osrfoundation.org/job/ignition_rendering-ci-ign-rendering3-homebrew-amd64/

[iche033]

disabled DepthCamera test on macOS and ticketed issue #108

This PR is ready for review again

[chapulina]

👍