Print how long it took for the script to run in verbose mode

Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>

pagure_sync_bugzilla.py

@@ -636,6 +636,7 @@ def _to_legacy_schema(product_and_project_and_summary, session=None):
 def main():
     """The entrypoint to the script."""
     global VERBOSE, DRYRUN, projects_dict
+    start = time.time()
 
     parser = argparse.ArgumentParser(
         description='Script syncing information between Pagure and bugzilla'
@@ -801,6 +802,10 @@ def main():
         with open(DATA_CACHE, 'w') as stream:
             json.dump({}, stream)
 
+    if VERBOSE:
+        delta = time.time() - start
+        print("Ran for %s seconds -- ie: %.2f minutes" % (delta, delta/60.0))
+
     sys.exit(0)