test_protect_syscall fails on focal-5.15 backports

[Roxana Nicolescu]

[SRU Impact]

Sysctl was removed from 5.5 kernels. In src/test/test-seccomp.c, test_protect_syscall
sysctl is called with the expectation the error result is EFAULT and not ENOSYS.
This affects autotests for all focal-5.15 linux kernels (hwe, azure, gcp, oem, gke, oracle).

[Fix]
Assertion checks if either EFAULT or ENOSYS is returned. This way it will work for focal-5.4 kernels and focal-5.15 kernels.

[Test to reproduce the issue]
1. Create a vm and install one of the focal-5.15 kernels (i.e 5.15.0-1029.35~20.04.1 linux-oracle-5.15).
2. Run the autotests for upstream and/or root-unittests:
autopkgtest --test-name=upstream systemd -- qemu <vm_image>

[Test to verify the fix]
1. Same as above
2. Apply the fix in your local repo and run the tests using your local repo
autopkgtest --test-name=upstream <path to systemd> -- qemu <vm_image>

[Where problems could occur]
This is not gonna affect end users since it is a change in the test only.
It may impact autotests, but it's a very low probability.

[Nick Rosbrook (enr0n)]

Thanks! I am going to copy this over to the original bug report, and mark this as a duplicate.