[9.18] Start named as auth and recursive server in pairwise

The script will start the named process configured as both an authoritative and recursive server for each pairwise ./configure configuration. The test is considered successful if the named process runs until the 5-second timeout is triggered, and there is no named.lock file present, indicating that named did not crash on shutdown.

(cherry picked from commit a708c2f9)

Backport of MR !7397 (merged)