Comment 2 for bug 1622879

Reviewed: https://review.openstack.org/369225
Committed: https://git.openstack.org/cgit/openstack/dragonflow/commit/?id=5fcc39e7045494d8d868e18ea636432af6d2df0d
Submitter: Jenkins
Branch: master

commit 5fcc39e7045494d8d868e18ea636432af6d2df0d
Author: Hong Hui Xiao <email address hidden>
Date: Tue Sep 13 16:24:53 2016 +0800

    Use NeutronOVSDBTransaction instead of Transaction

    impl_idl.Transaction is not used even by neutron, neutron use
    NeutronOVSDBTransaction as transaction class.

    In some ovs command, using Transaction will cause error, for example,
    AddBridgeCommand. This patch just uses NeutronOVSDBTransaction in df.
    It is a subclass of Transaction, which should cover all functionality
    of it. And it works better with neutron code.

    Change-Id: I0ccccea9cbe1eb05c2620155ea949123eba50f0c
    Closes-Bug: #1622898
    Related-Bug: #1622879