oeqa/cam: Refactor tests to promote data calibration

Refactor the CAM integration tests to reflect the new CAM reproduce
workflow.

Remove mention of default and custom UUIDs since we are no
longer relying on a default one.

Extend the processing period from 3000 to 4000 milliseconds in line
with documentation.

Remove the output command line argument for cam-tool analyze and
cam-tool pack.

Signed-off-by: Debbie Martin <Debbie.Martin@arm.com>