fix slurm runner for real user setups

for finished jobs (state DONE) the SLURM runner modifies
the job's stderr file. for real user setups this does not
work because the job dir is still owned by the real user.

solution just add a reclaim ownnership before writing

lib/galaxy/jobs/runners/slurm.py

@@ -153,6 +153,7 @@ class SlurmJobRunner(DRMAAJobRunner):
                     self.work_queue.put((self.fail_job, ajs))
                     return
             if drmaa_state == self.drmaa_job_states.DONE:
+                ajs.job_wrapper.reclaim_ownership()
                 with open(ajs.error_file) as rfh:
                     _remove_spurious_top_lines(rfh, ajs)
                 with open(ajs.error_file, 'r+') as f: