OVSDB Transaction should get the connection as a parameter

[Gal Sagie]

in the OVSDB native implementation using IDL, the transaction is taking the ovsdb connection from a global constant.
should be getting it as a parameter to the construction

This way other users can use the same implementation without the same connection (for example OVN)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/170771

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/170771
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=596a8c4c2c7588d4085f72fd5994b2d1cc8aab9e
Submitter: Jenkins
Branch: master

commit 596a8c4c2c7588d4085f72fd5994b2d1cc8aab9e
Author: Gal Sagie <email address hidden>
Date: Mon Apr 6 08:36:01 2015 +0300

    Add OVSDB connection as a parameter to the transaction

    This adds the ovsdb connection as a parameter to the transaction
    in the IDL implementation.
    This allows other users to use this with a different connection

    Change-Id: Iedc0a836c1fc11c88de275c6714e9657b40292df
    Closes-Bug: #1440638

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: neutron-pecan
Review: https://review.openstack.org/185072