Fix activity in BB8
Motivation
----------

BB8 uses activity `Data Rebalancing` but the activity defined in ATLAS schema is `Data rebalancing`. We should use the same activity everywhere, and it should be consistent with the share defined in FTS
diff --git a/lib/rucio/daemons/bb8/common.py b/lib/rucio/daemons/bb8/common.py
index 6a2185f62..1fe2a33c1 100644
--- a/lib/rucio/daemons/bb8/common.py
+++ b/lib/rucio/daemons/bb8/common.py
@@ -243,7 +243,7 @@ def rebalance_rse(rse, max_bytes=1E9, max_files=None, dry_run=False, exclude_exp
                 # Rebalance this rule
                 if not dry_run:
                     child_rule_id = rebalance_rule(parent_rule_id=rule_id,
-                                                   activity='Data Rebalancing',
+                                                   activity='Data rebalancing',
                                                    rse_expression=target_rse_exp,
                                                    priority=priority,
                                                    source_replica_expression=source_replica_expression,
['lib/rucio/daemons/bb8/common.py']