Updated openstack/openstack
Project: openstack/neutron  42874635de321255afdba5eac66df93d3957ea1f

Add the unit tests for ml2.rpc module

Increase coverage of unit tests until 100% for ml2.rpc module.

Closes-bug: #1269136

Change-Id: I87c40e6462018df6a4dc70c6a1285de55f827877