Add procps & libdnet as requirements.

Without them, /var/log/messages is filled with

vmsvc[21477]: [ warning] [guestinfo] Failed to get nic info.
vmsvc[21477]: [ warning] [guestinfo] Failed to get vms

If after upgrade you see

vmsvc[29571]: [ warning] [vmsvc] Error in the RPC receive loop: RpcIn: Unable to send.

in the logs, try to shutdown vm & start it again.