Fix test case header function name

This restores the expected behavior (skip) when running with non-root user

MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D30584

(cherry picked from commit 847b7d505490ae407a5c876e14e7788a4add7737)

Git Hash: bd1139898643dd54529c464e6ff66011d6388b3e
Git Author: sigsys@gmail.com

MFC r352263:

[jail] removal by jid doesn't trigger pre/post stop scripts

This commit fixes bug: command "jail -r" didn't trigger pre/post stop
commands (and others) defined in config file if jid is specified insted of
name. Also it adds basic tests for usr.sbin/jail to avoid regression.

Reviewed by: jamie, kevans, ray
Differential Revision: https://reviews.freebsd.org/D21328

[jail] removal by jid doesn't trigger pre/post stop scripts

This commit fixes bug: command "jail -r" didn't trigger pre/post stop
commands (and others) defined in config file if jid is specified insted of
name. Also it adds basic tests for usr.sbin/jail to avoid regression.

Reviewed by: jamie, kevans, ray
MFC after: 5 days
Differential Revision: https://reviews.freebsd.org/D21328