cmake 3.10.3: clean removes generated files
example tests were failing on taanab
The issue not related to ninja version, but to cmake. Cmake 3.10.3 cleans the generated
./Plugin/CMakeFiles/MyProxyCSInit.cxx file wen
ninja clean is called during the step. Later versions don't do that. That file is not regenerated unless cmake is ran again and hence the test fails.
for now, updating cmake on taanab to 3.11.4 since even that version doesn't have this issue.