Finish migrating B53 servers to new SWITCH-B53

[drn05r]

• [ ] Move eth2 (ECS-DMZ) on gw-b53 to iSolutions switchport no SOWN SWITCH-B53 switchport
• [ ] Configure switchport needed by backup-b53-1on SWITCH-B53
• [ ] Move cable from backup-b53-1 to SWITCH-B53 switchport TBC
• [ ] Configure switchports needed by vms-b53-1on SWITCH-B53
• [ ] Move cable from vms-b53-1 to SWITCH-B53 switchports TBC
• [ ] Inform iSolutions of switchports we can now no longer need on their switches