Catch StopIteration in run_bulk_job

As `run_bulk_job` can sometimes raise a `StopIteration` and this is
deprecated behavior, catch and squash this exception. Thus avoiding the
deprecated behavior. As this still breaks the loop and ends the
generator, this has no real effect on how this generator behaves.

Author: jakirkham

drmaa/helpers.py

@@ -288,6 +288,8 @@ def run_bulk_job(jt, start, end, incr=1):
         while drmaa_get_next_job_id(jids.contents, jid,
                                     _BUFLEN) != NO_MORE_ELEMENTS:
             yield jid.value.decode()
+    except StopIteration:
+        pass
     finally:
         drmaa_release_job_ids(jids.contents)