Fixes server fault thrown by delete password compute rbac test.

Currently, a server fault can be thrown by test_delete_password
in test_server_password_rbac [0], because the server needs to be
active before the admin password can be deleted [1].

This patch waits until the server is created.

[0] http://logs.openstack.org/55/446155/6/check/gate-tempest-dsvm-patrole-admin-ubuntu-xenial-nv/dd6c829/console.html
[1] https://github.com/openstack/tempest/blob/master/tempest/api/compute/servers/test_server_password.py

Change-Id: Ic8401925402b6d9f125d922b3d88574d1990ab01
1 file changed