def makemap(filenames, sourcedir, targetdir=None):

    if targetdir is None: targetdir = DEFAULT_TARGETDIR
    return OrderedDict(
        (join(targetdir, f),  join(sourcedir, f)) for f in filenames)
Allows extensions to request a tunnel bridge to use for
dataset/ETHPy150Open quaddra/provision/provision/config.py/makemap--crossover with--dataset/ETHPy150Open openstack/neutron/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_agent_extension_api.py/OVSAgentExtensionAPI.request_tun_br