Bug#940512: not supported in current buster chromium either

[Tomas Pospisek <tpo@sourcepole.ch>]

When I go to the "enroll this browser" page and press "Get certificate" 
then I get the same page back telling me:

    The browser does not seem to support the <keygen> feature

So this doesn't seem to work in chromium (80.0.3987.162-1~deb10u1) either.

Thanks,
*t