Config the network when deploy ova file on VM ESXi 6.7

When deploying ova file, meet the error about 'host did not have any virtual network defined.'
This error message appeared on the latest 6.7 version of the VMware ESXi server.
So the content of this python script file(deploy_ova.py) has been improved to adapt it to the latest server.

 if args.network:
        net_name = get_network_list(si, dc, args.network)
        network = [vim.OvfManager.NetworkMapping(name='NAT', network=net_name)]
        ovfManager = si.content.ovfManager
        # CreateImportSpecParams can specify many useful things such as
        # diskProvisioning (thin/thick/sparse/etc)
        # networkMapping (to map to networks)
        # propertyMapping (descriptor specific properties)
        cisp = vim.OvfManager.CreateImportSpecParams(entityName='AutoServer', diskProvisioning='thin',networkMapping=network, ipAllocationPolicy='static',ipProtocol='IPv4')  # deploy disk type is thin, default is thick
        cisr = ovfManager.CreateImportSpec(ovf_handle.get_descriptor(),
                                           rp, ds, cisp)
    else:
        ovfManager = si.content.ovfManager
        # CreateImportSpecParams can specify many useful things such as
        # diskProvisioning (thin/thick/sparse/etc)
        # networkMapping (to map to networks)
        # propertyMapping (descriptor specific properties)
        cisp = vim.OvfManager.CreateImportSpecParams(entityName='AutoServer',diskProvisioning='thin')  # deploy disk type is thin, default is thick
        cisr = ovfManager.CreateImportSpec(ovf_handle.get_descriptor(),
                                           rp, ds, cisp)

def get_network_list(si, dc, networkName):
    """
     Get a network in the datacenter by its names.
     """
    viewManager = si.content.viewManager
    containerView = viewManager.CreateContainerView(dc, [vim.Network],
                                                    True)
    try:
        for rp in containerView.view:
            if rp.name == networkName:
                return rp
    finally:
        containerView.Destroy()
    raise Exception("Failed to find network %s in datacenter %s" %
                    (networkName, dc.name))

Start with deploy_ova.py and inspect the network handling around get_network_list and CreateImportSpecParams. Reproduce the OVA deployment against ESXi 6.7, then verify that the requested network is found and mapped without the “host did not have any virtual network defined” error.