Hi,
Mgmt port is a out of band port, and should be connected to a dedicated management network. It is part of a dedicated VR (VR-Mgmt) and cannot be modified (apart its IP address). You can, alternatively, use any in band vlan for management, just by setting an IP address to it. Patching the Mgmt port into an in band port is possible, but you're using ports without reasons, imho.