Random fails of TestTaskManagers.test_deployment_task_managers

________________ TestTaskManagers.test_deployment_task_managers ________________
[gw3] linux2 -- Python 2.6.9 /home/jenkins/workspace/gate-fuel-web/nailgun/.tox/py26/bin/python2.6
args = (<nailgun.test.integration.test_task_managers.TestTaskManagers testMethod=test_deployment_task_managers>,)
keywargs = {}, extra_args = []
entered_patchers = [<mock._patch object at 0x5b83090>, <mock._patch object at 0x5b83950>, <mock._patch object at 0x5b839d0>, <mock._patch object at 0x5b83a90>]
exc_info = (<class '_pytest.assertion.reinterpret.AssertionError'>, AssertionError('44 != 100',), <traceback object at 0x7f9c942546c8>)
patching = <mock._patch object at 0x5b83090>
arg = <functools.partial object at 0x5b7faa0>

    @wraps(func)
    def patched(*args, **keywargs):
        # don't use a with here (backwards compatability with Python 2.4)
        extra_args = []
        entered_patchers = []

        # can't use try...except...finally because of Python 2.4
        # compatibility
        exc_info = tuple()
        try:
            try:
                for patching in patched.patchings:
                    arg = patching.__enter__()
                    entered_patchers.append(patching)
                    if patching.attribute_name is not None:
                        keywargs.update(arg)
                    elif patching.new is DEFAULT:
                        extra_args.append(arg)

                args += tuple(extra_args)
> return func(*args, **keywargs)

.tox/py26/lib/python2.6/site-packages/mock.py:1190:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
nailgun/test/integration/test_task_managers.py:87: in test_deployment_task_managers
    self.env.clusters[0].name
nailgun/test/base.py:814: in wait_ready
    self._wait_task(task, timeout, message)
nailgun/test/base.py:807: in _wait_task
    self.tester.assertEqual(task.progress, 100)
E AssertionError: 44 != 100

As seen here: https://fuel-jenkins.mirantis.com/job/gate-fuel-web/13/testReport/junit/nailgun.test.integration.test_task_managers/TestTaskManagers/test_deployment_task_managers/