sbin/pfctl: fix tests after recent output changes

The output now contains http-alt instead of 8080 and personal-agent
instead of 5555.
This was probably caused by 228e2087a32847fa51168f3f0c58f931cb2cb0f8.

Reviewed By: kp
Differential Revision: https://reviews.freebsd.org/D28481

(cherry picked from commit 58de61b9967b36f5fbd34e8b51ece7b4b772f104)