Restore -Werror to CI builds
Restore -Werror to CI builds

cpputest/cpputest,cpputest/cpputest,offa/cpputest,offa/cpputest,basvodde/cpputest,cpputest/cpputest,basvodde/cpputest,cpputest/cpputest,basvodde/cpputest,basvodde/cpputest,offa/cpputest,offa/cpputest