Update plugin version for transient tests to vanilla 2.7.1
Update plugin version for transient tests to vanilla 2.7.1

Actual version of vanilla plugin is 2.7.1

Change-Id: Ib85073ce567e26a3ca8beff5a06714aa248ee23f

openstack/sahara-scenario,openstack/sahara-scenario,openstack/sahara-tests,esikachev/sahara-tests,openstack/sahara-tests,openstack/sahara-tests,esikachev/sahara-tests,openstack/sahara-scenario,openstack/sahara-tests,esikachev/sahara-tests