Extend RESTful services to list/count/cancel/delete tasks which are scheduled for retry after failure

[gunterze]

Extend RESTful services

• GET /dcm4chee-arc/monitor/export - List Export Tasks
• DELETE /dcm4chee-arc//monitor/export - Delete Export Tasks
• GET /dcm4chee-arc/monitor/export/count - Count Export Tasks
• POST /dcm4chee-arc/monitor/export/cancel - Cancel Export Tasks
• GET /dcm4chee-arc/monitor/retrieve - List Retrieve Tasks
• DELETE /dcm4chee-arc/monitor/retrieve - Delete Retrieve Tasks
• GET /dcm4chee-arc[/monitor/retrieve/count - Count Retrieve Tasks
• POST /dcm4chee-arc/monitor/retrieve/cancel - Cancel Retrieve Tasks
• GET /dcm4chee-arc/monitor/stgver - List Storage Verification Tasks
• DELETE /dcm4chee-arc/monitor/stgver - Delete Storage Verification Tasks
• GET /dcm4chee-arc/monitor/stgver/count - Count Storage Verification Tasks
• POST /dcm4chee-arc/monitor/stgver/cancel - Cancel Storage Verification Tasks
• GET /dcm4chee-arc/monitor/diff - List Compare Studies Tasks
• DELETE /dcm4chee-arc/monitor/diff - Delete Compare Studies Tasks
• GET /dcm4chee-arc/monitor/diff/count - Count Compare Studies Tasks
• POST /dcm4chee-arc/monitor/diff/cancel - Cancel Compare Studies Tasks
• GET /dcm4chee-arc/queue/{queueName} - List Tasks in Queue
• DELETE /dcm4chee-arc/queue/{queueName} - Delete Tasks in Queue
• GET /dcm4chee-arc/queue/{queueName}/count - Count Tasks in Queue
• POST /dcm4chee-arc/queue/{queueName}/cancel - Cancel Tasks in Queue

to list/count/cancel/delete tasks which are scheduled for retry after failure, by supporting value SCHEDULED_FOR_RETRY of Query Parameter status