Enabled network over vsock

podman machine with Microsoft HyperV will use hvsock on the guest and
vsock on the guest for its networking.  this pr enables the basics for
this to happen as well as changes to ignition to automatically set this
up with network manager.

the vm binary referenced in this pr is in containers/gvisor-tap-vsock
and will need to be added to distributions.

[NO NEW TESTS NEEDED]
Signed-off-by: Brent Baude <bbaude@redhat.com>

vendor/github.com/containers/libhvee/pkg/hypervctl/vm.go

@@ -395,9 +395,6 @@ func (vmm *VirtualMachineManager) NewVirtualMachine(name string, config *Hardwar
 		return err
 	}
 
-	//if err := vmm.CreateVhdxFile(config.DiskPath, config.DiskSize*1024*1024*1024); err != nil {
-	//	return err
-	//}
 	if err := NewDriveSettingsBuilder(systemSettings).
 		AddScsiController().
 		AddSyntheticDiskDrive(0).
@@ -416,13 +413,15 @@ func (vmm *VirtualMachineManager) NewVirtualMachine(name string, config *Hardwar
 		return err
 	}
 	// Add default network connection
-	if err := NewNetworkSettingsBuilder(systemSettings).
-		AddSyntheticEthernetPort(nil).
-		AddEthernetPortAllocation(""). // "" = connect to default switch
-		Finish().                      // allocation
-		Finish().                      // port
-		Complete(); err != nil {
-		return err
+	if config.Network {
+		if err := NewNetworkSettingsBuilder(systemSettings).
+			AddSyntheticEthernetPort(nil).
+			AddEthernetPortAllocation(""). // "" = connect to default switch
+			Finish().                      // allocation
+			Finish().                      // port
+			Complete(); err != nil {
+			return err
+		}
 	}
 	return nil
 }

vendor/github.com/containers/libhvee/pkg/hypervctl/vm_config.go

@@ -98,6 +98,9 @@ type HardwareConfig struct {
 	DiskSize uint64
 	// Memory in megabytes assigned to the vm
 	Memory int32
+	// Network is bool to add a Network Connection to the
+	// default network switch in Microsoft HyperV
+	Network bool
 }
 
 type Statuses struct {