spring-modularization: remove simulator planner

The simulator uses the default planners of cloudstack and does not
require a separate planner context (as of now). This was just c&p from
baremetal planners.

Signed-off-by: Prasanna Santhanam <tsp@apache.org>
Adding readable start and end time stamps

Signed-off-by: Santhosh Edukulla <Santhosh.Edukulla@citrix.com>
CLOUDSTACK-4686: Fixed volume limit for domain