juju/juju — pull request #483 by axw (2014-08-08 05:47:28+00:00)
Title: provider/manual: don't change config in Open/SetConfig

The manual provider's Open and SetConfig methods were
both using the result of "validate", which replaces
missing manual-specific attributes with their defaults.
Open and SetConfig should not alter the input config.

Fixes https://bugs.launchpad.net/juju-core/+bug/1347715