Bug#959984: krb5: Add "Multi-Arch: foreign" to krb5-doc

[Sam Hartman]

I'm not sure I'm seeing how this comes up in practice for krb5-doc.
Would you mind helping my curiosity out.
Also, I'm somewhat horrified that I didn't get a notification for your
MR.
My notification setting for debian/krb5 is watch.
Have you run into other cases where people were not notified of salsa
MRs?