Add a retry button on failed processes

[zonagit]

Add a retry button to allow failed processes to be retried.
Add a new retry status.
Retry button will clone row of failed process in cws_sched_worker_proc_inst, null out all its fields except the status field that will be set to pending in order for the process to be retried possibly by another worker.
Retry action will invoke the common workflow action detailed above and an adaptation custom action.