Code review comment for lp://staging/~gary/juju-gui/exportBugs

*** Submitted:

Fix export and import bugs

Our support for exporting and importing config values and expose flags
was buggy. This fixes four discrete but related bugs.

  - Exporting config values would exclude those that had false-y default
values.
  - We did not export the expose flag.
  - Importing config values did not work.
  - We called the expose flag "exposed", which is not what the actual
delpoyer expects.

To qa, open up the sandbox, deploy apache with "enable_modules" set to
something or other, and expose it. Then export the environment. When
you look at the service in the file, you should see "expose: true" and
"enable_modules: mod_proxy" or whatever value you set. Then reload the
GUI and drag the file into the sandbox. When the service has loaded,
you should see that it is exposed, and when you look at the config in
the inspector, you should see your value in the "enable_modules" field.

R=jeff.pihach
CC=
https://codereview.appspot.com/15400052

https://codereview.appspot.com/15400052/