
The docstring of VMTasks.dd_load_test missed a lot of details about the sceanario, which made our customers unhappy with it. This patch tries to fix the docstring, remove wrong information and add description of the input arguments. Also, this patch lists all arguments of VMTasks.dd_load_test explicitly in the run method. Change-Id: I5e79c84db223b1be5bd1f3b902f567ad8b2f6ad6