def build(self, path=None, header=None):
    write_properties(self.options, path=path, header=header)
Extend a cluster with nodes provisioned via libcloud.
dataset/ETHPy150Open mtth/azkaban/azkaban/job.py/Job.build--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/admin/acceptance.py/LibcloudRunner.extend_cluster