Reduced NGS concurrency to 3 active connections

etc/kayobe/inventory/group_vars/dellos9-s6010-on

@@ -88,8 +88,8 @@ switch_interface_config_bm_node: "{{ switch_interface_config_all }} + {{ switch_
 kolla_neutron_ml2_generic_switch_extra:
   # The physical networks to which this switch is mapped.
   ngs_physical_networks: "{{ hs_eth_physical_network }}"
-  # Limit the number of concurrent connections to the switch to 5. This setting
+  # Limit the number of concurrent connections to the switch to 3. This setting
   # aims to provide a trade off between the potential for failures during
   # concurrent configuration and excessive serialisation of operations that
   # already take a long time (~20 seconds per port plug/unplug).
-  ngs_max_connections: 5
+  ngs_max_connections: 3