XD-1306 Moved RemoteFile classes from dirt to spring-xd-extension-batch
Update Jolokia dependency to use IO platform

- Update `spring-xd-dirt` jolokia dependency to use `jolokia-core` artifact
so that Spring IO platform version (currently `1.2.2`) gets updated
automatically.
- Remove explicit version update
XD-1942 - Use guava 15.0 for spring-xd-integration-test
XD-1939 - Update to Spring Batch Admin 1.3.0.RC1
XD-1941 Re-enabled Boot repackaging for spring-xd-yarn sub-projects
XD-1849 Move batch jobs configurations endpoint

- Move REST endpoint `/batch/jobs` to `/jobs/configurations`
- Fix admin UI
- Fix tests
- Move `jobs/executions` endpoint tests into `BatchJobExecutionsControllerIntegrationTests`
XD-1849 Move instances by jobName endpoint

- Move from `/batch/jobs/{jobName}/instances` to `/jobs/instances?jobname={jobName}`
- Move test
Force versions from platform transitively