IEEE 802.11: Add a test capture file

IEEE 802.11: Add a test capture file

This capture file triggered a buffer over-read with the 4.9.2 release
fixed in the 4.9.3 release.

With a previous fix (3f1c4af0012eb36bcf740a7cb83770087b9983d7),
the problem no longer exists.

The pcap file was updated to pass the sanity checks and to avoid
pcap_loop() error messages.

Update the output of the test accordingly.

Partial update from 4846b3c5d0a850e860baf4f07340495d29837d09
in 4.9 branch.