step([$class: 'MockLoadBuilder']): Mock Load
Generates load on the Jenkins build node and over the remoting channel. There will be a random number of build artifacts created matching the file name pattern
mock-artifact-*.txt. There will be a JUnit test report with the file name
mock-junit.xml. Approximately 5% of the time, the build will "fail" its tests and thus no artifacts will be generated.
averageDuration : long
The average duration that the build should take. The actual duration of each step will be randomly selected where with an expected standard deviation equal to the square root of the expected average duration.