Just checking for an account in keystone is pointless since nova and
neutron take way more time before they are fully operational. If the user
would continue as tools/kolla suggests, the init-runonce script would
fail because either nova or neutron would not be ready for service.
Change-Id: I8fbfaa16d961b418b9ac6a34d311adb8e41b61e9
Closes-bug: #1471331