[RTADPA BW tests] Cleanup copying of HLT2 BW test output -> eos & allow overwrite

FYI @lugrazet

Goes with lhcb-datapkg/PRConfig!362 (merged)

• Cleanup logging after !267 (merged)
• Only save output to current_hlt2_output/ directory. I was previously interested if you could save to a new directory, which clearly you can, and now I think we should just put everything we need for the BW tests in this directory to be neat.
• Add -f flag to the eos copying so it can overwrite

handlers/utils/publish.py

@@ -52,7 +52,10 @@ def post_mattermost(message, webhook=None):
             log.error(f"Failed to post to Mattermost: {e}")
 
 
-def post_gitlab_feedback(trigger_source, message, add_labels=[], remove_labels=[]):
+def post_gitlab_feedback(trigger_source,
+                         message,
+                         add_labels=[],
+                         remove_labels=[]):
     """Post feedback to GitLab for a ci-test trigger.
 
     Args: