Support 4.14.0 - 4.14.3 kernels in eBPF.
Support 4.14.0 - 4.14.3 kernels in eBPF.

While testing COS, I noticed that we don't properly support kernels in the
4.14.0 - 4.14.3 range (included), since they don't include the backport
patch done in https://github.com/torvalds/linux/commit/4ca59b14e588f873795a11cdc77a25c686a29d23,
which was backported starting from 4.14.4.

angeloc/sysdig,angeloc/sysdig,angeloc/sysdig,angeloc/sysdig,angeloc/sysdig