Write the HTTP response only when all output has been formatted#858

wedgberto wants to merge 4 commits intoOData:release-8.xOData/AspNetCoreOData:release-8.xfrom

wedgberto:issues/response-already-started-causes-incomplete-json-response-when-exception-occurswedgberto/AspNetCoreOData:issues/response-already-started-causes-incomplete-json-response-when-exception-occursCopy head branch name to clipboard