Fix linux_net.py interface-driver loading.

bug 950381

linux_net.py previously set the value of interface_driver based on a flag
when the module was loaded.  This breaks when nova-manage is used to
invoke anything using the interface_driver, as nova-manage loads the
nova.network.linux_net module before flags are properly set.  This patch
moves the initialization of the interface_driver variable to within a
function that will only be called once flags are properly loaded.

Note: this patch also fixes the unplug() action for the OVS vif-plugging
code to actually remove the device created to act as the gateway device.
Also tweaks the plug() to use the get_dev() method, reducing duplicate
code.

Change-Id: I97a17c010d4d6a67e2340a81315da00775c67eea

0 files changed, 0 insertions, 0 deletions