Re-enable skipped tests for OSX and Windows

I'll be disabling several tests that are known to fail on OSX and Windows so we can go back to green CI. We should go back to fix these asap.

OSX / MacOS / Apple

• UNIT_Publisher_TEST

  • It segfaults even before printing any Ignition console messages. It's very similar to UNIT_WorldControl_TEST, but that one passes on Dome.

• INTEGRATION_Examples_TEST - ExampleTest.Configs

• INTEGRATION_ExamplesBuild_TEST- Plugins/ExamplesBuild.Build/0

• UNIT_Publisher_TEST - PublisherTest.Load

• UNIT_TopicViewer_TEST - TopicViewerTest.Load

• UNIT_WorldControl_TEST - WorldControlTest.Load

• UNIT_WorldStats_TEST - WorldStatsTest.Load

• UNIT_MainWindow_TEST- MainWindowTest.OnAddPlugin

• UNIT_ign_TEST - CmdLine.list

  9: /Users/jenkins/workspace/ignition_gui-ci-ign-gui2-homebrew-amd64/ign-gui/src/ign_TEST.cc:57: Failure
  9: Expected: (output.find("TopicEcho")) != (std::string::npos), actual: 18446744073709551615 vs 18446744073709551615
  9: /Users/jenkins/workspace/ignition_gui-ci-ign-gui2-homebrew-amd64/ign-gui/src/ign_TEST.cc:58: Failure
  9: Expected: (output.find("Publisher")) != (std::string::npos), actual: 18446744073709551615 vs 18446744073709551615
  

Windows

• Timeout with unknown file: error: SEH exception with code 0xc0000005 thrown in the test body.
  • UNIT_Application_TEST - ApplicationTest.Constructor
  • UNIT_MainWindow_TEST- MainWindowTest.Constructor
  • UNIT_Publisher_TEST - PublisherTest.Load
  • UNIT_Plugin_TEST - PluginTest.DeleteLater
  • UNIT_TopicViewer_TEST - TopicViewerTest.Load
  • UNIT_WorldControl_TEST - WorldControlTest.Load
  • UNIT_WorldStats_TEST - WorldStatsTest.Load
  • INTEGRATION_Examples_TEST - ExampleTest.Configs
  • UNIT_Helpers_TEST - HelpersTest.findFirstByProperty

• INTEGRATION_ExamplesBuild_TEST - Plugins/ExamplesBuild.Build

  • 'make' is not recognized as an internal or external command

• UNIT_ign_TEST - CmdLine.list

  9: D:\Jenkins\workspace\ign_gui-ign-2-win\ws\ign-gui\src\ign_TEST.cc(57): error: Expected: (output.find("TopicEcho")) != (std::string::npos), actual: 18446744073709551615 vs 18446744073709551615
  9: D:\Jenkins\workspace\ign_gui-ign-2-win\ws\ign-gui\src\ign_TEST.cc(58): error: Expected: (output.find("Publisher")) != (std::string::npos), actual: 18446744073709551615 vs 18446744073709551615
  

• UNIT_Application_TEST - ApplicationTest.LoadPlugin

  1: D:\Jenkins\workspace\ign_gui-ign-2-win\ws\ign-gui\src\Application_TEST.cc(66): error: Expected equality of these values:
  1:   nullptr
  1:     Which is: NULL
  1:   (static_cast<QGuiApplication *>(QCoreApplication::instance()))
  1:     Which is: 00000000001EF5A0