'Returns the only running/measuring policy on VNX.
.. note: VNX only allows one running policy.'

def get_running_policy(self):

    policies = self.vnx.get_policy()
    policies = list(filter((lambda p: ((p.state == 'Running') or (p.state == 'Measuring'))), policies))
    if (len(policies) >= 1):
        return (policies[0], False)
    else:
        return (self.create_policy('vnx_policy'), True)
