Comment 2 for bug 1308544

Reviewed: https://review.openstack.org/87998
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=476dc5efcdb11c9859b062dc69a8c205e69be861
Submitter: Jenkins
Branch: master

commit 476dc5efcdb11c9859b062dc69a8c205e69be861
Author: Phil Day <email address hidden>
Date: Wed Apr 16 15:23:15 2014 +0000

    Ignore errors when deleting non-existing vifs

    If an instance fails during its network creation (for example
    if the network-vif-plugged event doesn't arrive in time) a
    subsequent delete will also fail when it tries to delete the
    vif, leaving the instance in a Error(deleting) state.

    This can be avoided by including the "--if-exists" option to
    the ovs-vsctl command so that the command doesn't fail if the
    vif doesn't exist.

    Change-Id: Ic613c9d6e0619f51fcd931e62f6d6bce404ebe81
    Closes-bug: #1308544