re-add passthrough_errors to cli runner (#1928)
re-add passthrough_errors to cli runner (#1928)

This got dropped during the cli simplification.  Re: #1679
pallets/flask,drewja/flask,pallets/flask,adrianmoisey/cptdevops,tristanfisher/flask,adrianmoisey/cptdevops,mitsuhiko/flask,pallets/flask,tristanfisher/flask,drewja/flask,dawran6/flask,Endika/flask,fkazimierczak/flask,auready/flask,dawran6/flask,drewja/flask,fkazimierczak/flask,auready/flask,Endika/flask,fkazimierczak/flask,mitsuhiko/flask