Current File : //lib/python2.7/site-packages/cloudinit/sources/DataSourceCloudStack.pyo
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    Implements password fetching from the CloudStack password server.

    http://cloudstack-administration.readthedocs.org/
       en/latest/templates.html#adding-password-management-to-your-templates
    has documentation about the system.  This implementation is following that
    found at
    https://github.com/shankerbalan/cloudstack-scripts/
       blob/master/cloud-set-guest-password-debian
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