Use the same trickery we do in the package build and search for
the actual bpftool binary. For the CI job any one we find is
good enough.
When we switch all jobs to 26.04 we can drop all of this.
This reverts commit cc814110af.
/usr/sbin/bpftool is completely broken inside containers on
Ubuntu which makes meson blow up so disable the bpf-framework
stuff to avoid the issue.
TODO: Drop when we move off Ubuntu Noble as this will be fixed
in the next Ubuntu LTS release.
Daan De Meyer
Yu Watanabe
Luca Boccassi