test: Update reference for realmd sudo bug
test: Update reference for realmd sudo bug

While #1582111 was one reason for breaking sudo, this got fixed since
then. #1620097 *also* breaks this, with the same net effect, but
different root cause. Update the bug reference to avoid confusion.

Closes #10012
andreasn/cockpit,andreasn/cockpit,moraleslazaro/cockpit,deryni/cockpit,deryni/cockpit,andreasn/cockpit,garrett/cockpit,cockpit-project/cockpit,mvollmer/cockpit,moraleslazaro/cockpit,cockpit-project/cockpit,moraleslazaro/cockpit,andreasn/cockpit,cockpituous/cockpit,garrett/cockpit,deryni/cockpit,martinpitt/cockpit,mvollmer/cockpit,martinpitt/cockpit,moraleslazaro/cockpit,deryni/cockpit,cockpituous/cockpit,deryni/cockpit,cockpituous/cockpit,moraleslazaro/cockpit,cockpituous/cockpit,martinpitt/cockpit,garrett/cockpit,moraleslazaro/cockpit,deryni/cockpit,garrett/cockpit,martinpitt/cockpit,andreasn/cockpit,mvollmer/cockpit,mvollmer/cockpit,martinpitt/cockpit,mvollmer/cockpit,cockpituous/cockpit,andreasn/cockpit,andreasn/cockpit,moraleslazaro/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,garrett/cockpit,cockpit-project/cockpit,deryni/cockpit,cockpituous/cockpit