Do not concatenate start/stop markers to the action string with a '_',
delimit them with a space instead. This will make easier to parse the
message afterwards.
Adds various methods that are used in UxPerf workloads and additional
helper class for UxPerf specific functions.
Adds a class to contain UxPerf specific functions.
Added a workload type to handle workloads that have both an APK with an
application and associated automation JAR. Added benchmarkpi
implementation using using the new workload.