Adds the is Cycle feature to stage

[bharathappali]

This change makes the stages to re-visit the same stage till the breaking condition is met. As EM needs to record the metrics for each cycle interval we need to run the same transistion multiple times till the cycle needs to be stop based on a dynamic condition.

Usage of intermidiate stages is to keep track of a main stage and intermidiate stages act as sub cycle stages, but here the requirement is a bit different. Now we don't need multiple stages to be processed but same stage to be scheduled multiple times so now we extend EM to support cyclcing stages as well. So now we introduce the isCycle feature in EM Stages.

PS: Lot of work needs to be done before we finalise the design of cycling stages

Signed-off-by: bharathappali [email protected]