Use bold for entire row for default principal

Signed-off-by: Kevin Wasserman <kevin.wasserman@painless-security.com>

(cherry picked from commit 5d6ed004b535a9d8bd7beb3f543fcf470d9d31fa)

https://github.com/krb5/krb5/commit/ea56b82300c6ca81e44f7aea4119c72d377d9467
Author: Kevin Wasserman <kevin.wasserman@painless-security.com>
Committer: Tom Yu <tlyu@mit.edu>
Commit: ea56b82300c6ca81e44f7aea4119c72d377d9467
Branch: krb5-1.10
 src/windows/leash/LeashView.cpp |   72 ++++++++++++++++++++++----------------
 src/windows/leash/LeashView.h   |    6 ++-
 2 files changed, 46 insertions(+), 32 deletions(-)