Data Processing: Fixing update of execution status

Overriding get_raw_data rather than get_data to get the
automatic updating of job execution statuses to work properly

Change-Id: Idac1138e4b5cbf9bf285831a9e83d37e0717c86b
Closes-Bug: bug #1336310
Co-Authored-By: Andrew Lazarev <alazarev@mirantis.com>
Merge "Data Processing: Fixing update of execution status"