WaResultsCollector: support new jankbench parameter
WaResultsCollector: support new jankbench parameter

Jankbench workload of WA v3 uses now 'test_ids' instead of 'test' as
parameters.
Add the support of this new parameter name

Signed-off-by: Vincent Guittot <eb7d4bc75c19026be4afbcab4b7b388cf01677ff@linaro.org>

ARM-software/lisa,ARM-software/lisa,credp/lisa,ARM-software/lisa,credp/lisa,credp/lisa,credp/lisa,ARM-software/lisa