Updated openstack/openstack
Project: openstack/neutron  72bb627ef3cc697d474f18932cb340e20663665b

Switch to using subunit-trace from tempest-lib

This commit removes the local copy of subunit-trace and instead uses
the version packaged with tempest-lib.

Change-Id: Ia7b57c6fc092514d9fbe4e71f580a4b189dc68b0