Description of problem:
[RFE]Guests should have network after v2v conversion if source vmware guest's network is connected to a distributed switch

Version-Release number of selected component (if applicable):
virt-v2v-2.0.7-6.el9.x86_64
libguestfs-1.48.4-2.el9.x86_64
libvirt-libs-8.7.0-1.el9.x86_64
qemu-img-7.1.0-1.el9.x86_64
nbdkit-server-1.30.8-1.el9.x86_64
libnbd-1.12.6-1.el9.x86_64
guestfs-tools-1.48.2-5.el9.x86_64

How reproducible:
100%

Steps to Reproduce:
1.Prepare a VMware guest and assign a network which is connected to a distributed switch of ESXi host to the guest

1. cat esx7.0-rhel8.4-with-VDS-network.vmx |grep ethernet
   ethernet0.virtualDev = "vmxnet3"
   ethernet0.dvs.switchId = "50 34 26 b2 94 e9 3b 16-1d 68 87 bf ff 4a 54 39"
   ethernet0.dvs.portId = "7"
   ethernet0.dvs.portgroupId = "dvportgroup-1285"
   ethernet0.dvs.connectionId = "40347428"
   ethernet0.shares = "normal"
   ethernet0.addressType = "vpx"
   ethernet0.generatedAddress = "00:50:56:b4:ed:5a"
   ethernet0.uptCompatibility = "TRUE"
   ethernet0.present = "TRUE"

2.Use virsh to dump the guest xml from VMware

1. virsh -c vpx://root@10.73.227.27/data/10.73.225.34/?no_verify=1 dumpxml esx7.0-rhel8.4-with-VDS-network
   Enter root's password for 10.73.227.27:
   <domain type='vmware' xmlns:vmware='http://libvirt.org/schemas/domain/vmware/1.0'>
   <name>esx7.0-rhel8.4-with-VDS-network</name>
   .....
   <interface type='vds'>
   <mac address='00:50:56:b4:ed:5a' type='generated'/>
   <source switchid='503426b2-94e9-3b16-1d68-87bfff4a5439' portid='7' portgroupid='dvportgroup-1285' connectionid='40347428'/>
   <model type='vmxnet3'/>
   </interface>
   ......

3. Convert the guest from VMware to rhv by v2v

1. virt-v2v -ic vpx://root@10.73.227.27/data/10.73.225.34/?no_verify=1 -it vddk -io vddk-libdir=/home/vddk7.0.3 -io vddk-thumbprint=76:75:59:0E:32:F5:1E:58:69:93:75:5A:7B:51:32:C5:D1:6D:F1:21 -o rhv-upload -oc https://dell-per740-22.lab.eng.pek2.redhat.com/ovirt-engine/api -op /home/rhvpasswd -os nfs_data -ip /home/passwd esx7.0-rhel8.4-with-VDS-network --mac 00:50:56:b4:ed:5a:bridge:ovirtmgmt -v -x |& tee > v2v-convert-guest-with-distributed-switch-no-entry-network-name.log
   █ 100% [****************************************]

4. Check the guest after conversion, found guest has no network, pls refer to attached screenshot

Actual results:
Guests don't have network after v2v conversion if source vmware guest's network is connected to a distributed switch

Expected results:
As above description

Additional info: