We need to be able to compare and discover ansible performance
regressions or improvements of ansible. Currently we have no way of
detecting changes there other than observing the overall system load
of executors. One way to get some metrics is to log the cpu times used
by individual ansible runs and the sum of them over the whole job
execution. With this one could grab that data from the log and analyse
them.
Change-Id: Ib0b62299c741533f0d1615f67eced9601498f00d
5a4db84e5a