def get_template_from_string(source, origin=None, name=None):
    return Template(source, origin, name)
Uses YAML file for cluster configuration if option given.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/template/loader.py/get_template_from_string--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/benchmark/test/test_script.py/ClusterConfigurationTests.test_yaml_setup