[Webservice] Use leading zeros in usr/Reports folders

Description

Adding leading zeros for runs in the correction reports file path for usr/Reports as mentioned in this issue: https://git.xfel.eu/calibration/pycalibration/-/issues/75

How Has This Been Tested?

Relevant Documents (optional)

Types of changes

• New feature (non-breaking change which adds functionality)

Checklist:

• configuration (/home/xcal/.config/pycalibration/webservice)for production needs to be updated during the next deployment.

Reviewers

@schmidtp @kluyvert

webservice/webservice.py

@@ -1447,7 +1447,7 @@ class ActionsServer:
                 partition=partition,
                 action=action, instrument=instrument,
                 cycle=cycle, proposal=proposal,
-                runs="_".join([f"r{r:04d}" for r in run_nrs]),
+                runs="_".join([f"r{int(r):04d}" for r in run_nrs]),
                 time_stamp=request_time.strftime('%y%m%d_%H%M%S_%f'),
                 det_instance=karabo_id,
                 request_time=request_time.isoformat(),