def __virtual__():
    if 'boto_elasticache.exists' in __salt__:
        return 'boto_elasticache'
    else:
        return False
Get the topology constraints declared in flavor or image
dataset/ETHPy150Open saltstack/salt/salt/states/boto_elasticache.py/__virtual__--crossover with--dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/virt/hardware.py/_get_cpu_topology_constraints