XD-1095 XD-1086 stop all job executions

- Added REST endpoint for stop all job executions
 - Added params option "stop=true" for stop all and stop(jobExecutionId) REST
   endpoints
- Added shell command 'job all execution stop'

Fix review comments

- Change command to read 'job execution all stop'
- Added force option handling to stop all command
- Fixed the test
Fix package tangle

Move CompositeModuleDefinitionService from
'org.springframework.xd.dirt.module' to 'org.springframework.xd.dirt.stream'