Add failing test for missing client cert when using --trusted-host
Add failing test for missing client cert when using --trusted-host

sbidoul/pip,pfmoore/pip,xavfernandez/pip,pypa/pip,xavfernandez/pip,pypa/pip,pradyunsg/pip,xavfernandez/pip,sbidoul/pip,pradyunsg/pip,pfmoore/pip