Updated openstack/openstack
Project: openstack/tempest  e1db29ce1b38db06d17a544334ee20196abcee03

Drop OfficialClientManager and references to it

OfficialClientManager is unused now that scenario tests use
clients.Manager instead. Dropping the class, the hacking
rule that forbade its use in API tests and related unit tests.

Change-Id: Ib359b9ab0a903436d9d9c265e8c4d82bdd80a496