def get_header_value(headers, header):
    for (headerName, value) in headers:
        if headerName == header:
            return value
    return None
Returns user snapshots list.
dataset/ETHPy150Open ebu/radiodns-plugit/RadioVisServer/tests.py/get_header_value--crossover with--dataset/ETHPy150Open openstack/rally/rally/plugins/openstack/scenarios/cinder/utils.py/CinderScenario._list_snapshots