locally verified helper patch to import in sandbox bundles that including lists of relations
Support adding a single or multiple relations per endpoint from a bundle yaml file
Added unit tests for new addRelations fakebackend method
Merge pull request #623 from hatched/one-to-many-endpoints

Import bundles with one to many endpoint relations

Some bundles have a one to many endpoint relation correlation as outlined in this bug: https://bugs.launchpad.net/juju-gui/+bug/1381376. This adds support for importing bundles with this syntax.
    Prototype.