420.status-network uses netstat(1) to report interface status and by default
netstat(1) truncates interface names.

Add the -W (don't truncate interface names) flag to daily_status_network_netstat_flags
as a default in periodic.conf(5).

After this patch, the default 420.status-network command is netstat -i -d -W -n

There's a couple bug reports (linked below) where the expected behavior is to display
the entire interface name. It seems reasonable that this shoud be default behavior.

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=163572
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=214345