Updated openstack/openstack
Project: openstack/heat  0908b96834f4d48b139f8c2814a2e29a78ab12a7

Fix heat.engine.clients.has_client

Properly check client plugins existence by looking into
ExtensionManager.names().

Change-Id: I023f75a2b4c12f0e968249a70b327bf8ffc5378d
Closes-Bug: #1374096