Add default case and ENOSYS expected cases for auditon(2) system call

[aniketp]

Summary

This revision introduces test cases for the remaining audit events for auditon(2). The mode introduced
are default mode and the one's which have not yet been implemented (or are not supported) and return
ENOSYS

The audit events are:

• A_GETFSIZE (default mode)
• A_GETCWD
• A_GETCAR
• A_GETSTAT
• A_SETSTAT
• A_SETUMASK
• A_SETSMASK

Test Plan

Execute make && make install from test/sys/audit.
Execute kyua test from /usr/tests/sys/audit. All testcases should succeed.

[asomers]

tests/sys/audit/administrative.c

754 ↗

(On Diff #45650)

How about "auditon_default_success" to distinguish this test case from those that follow?

[aniketp]

• Rename auditon_{success/failure} to auditon_default_{success/failure}