pw: fix the checks in boolean_str() after r326738. Add related test cases for `pw useradd -D -w`. PR: 231649 Reviewed by: eugen Approved by: kib (mentor) Differential Revision: https://reviews.freebsd.org/D17299
head/usr.sbin/pw/pw_conf.c
head/usr.sbin/pw/tests/pw_useradd_test.sh