[JUJU-3614] Prevent panic on empty bundle contents #15535
Merged
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If the contents of a bundle is empty, then don't panic when attempting to read the contents.
The code expected that a validation check on the bundle contents was done before hand, but that's not always the case. This just guards against the scenario.
Checklist
QA steps
$ juju bootstrap lxd test --build-agent $ touch bundle.yaml $ juju deploy ./bundle.yaml
Bug reference
https://bugs.launchpad.net/juju/+bug/2017681