This will only run the Jenkins Pipeline if Git detects a change in the
specified file path. If no change is found in the path, the individual Pipeline
statges are skipped.
(cherry picked from commit 1c3e5e18fd746bbb6ccd4a09d1fec1bed2f8316b)
Commit aa8cb76979 ("Jenkins: select build library from equuleus branch")
accidently pushed the version of the iproute2 package to a non buildable
version.
Version was re-set to match the Kernel version.
