System inventory tests verify hardware and node configurations/discovery.
Removing trailing spaces
Changing 'compute' to 'workers'. Adding format to command lines.
Adjusting bulleted sub-lists. Fixing typos. Removing "change the size of the image storage pool on ceph" as it already exists on the storage test plan.
Change-Id: I88fba446c5dc8c880cc19274ccccd498a81756ad
Signed-off-by: Ada Cabrales <ada.cabrales@intel.com>