ZTS: Add bpftrace dependency to Linux VMs

[AttilaFueloep]

Motivation and Context

Wrote a test which requires bpftrace.

Description

Add a bpftrace dependency to the Linux VMs.

How Has This Been Tested?

Verified that all Linux VMs install bpftrace by looking at the logfiles.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Performance enhancement (non-breaking change which improves efficiency)
• Code cleanup (non-breaking change which makes code smaller or more readable)
• Breaking change (fix or feature that would cause existing functionality to change)
• Library ABI change (libzfs, libzfs_core, libnvpair, libuutil and libzfsbootenv)
• Documentation (a change to man pages or other documentation)

Checklist:

• My code follows the OpenZFS code style requirements.
• I have updated the documentation accordingly.
• I have read the contributing document.
• I have added tests to cover my changes.
• I have run the ZFS Test Suite with this change applied.
• All commit messages are properly formatted and contain Signed-off-by.

[AttilaFueloep]

Rebased.

[robn]

I think it needs to be in tests/zfs-tests/include/commands.cfg as well?

(Not gonna lie: my gut feel on needing bpftrace for a test feels sketchy, but I can't quite put my finger on it. I'll reserve judgement until I see the test though).

[tonyhutter]

@AttilaFueloep these changes should be included in your future PR with the test case, rather than a standalone PR now. If you are just wanting to test the CI, you can open a private PR against your AtillaFueloep:zfs repo and it will startup your github runners.

[AttilaFueloep]

@robn

I think it needs to be in tests/zfs-tests/include/commands.cfg as well?

Yeah, right. Thanks for noting.

@tonyhutter Ah all right, makes sense. Sorry for the noise. Closing