Reorganize platform settings.

Reorganize platform settings.

The first cut of the platform work was a bit unclean with respect to the
dividing lines between the quickstart app code and the parts that can be
re-used as a library.  This branch moves things around to re-attain that
separation.

https://code.launchpad.net/~bac/juju-quickstart/platform-settings-2/+merge/221745

(do not edit description out of merge proposal)

[bac, 2014-06-02 14:34:47]

Please take a look.

[bac, 2014-06-02 15:39:35]

QA instructions:

The changes include the things you requested plus a later change to set JUJU_CMD
for OS X, since brew installs it in /usr/local/bin.

QA:
brew uninstall juju
.venv/bin/python juju-quickstart -e ec2 # Or some other existing environment

Ensure you see:
Installing the following packages: juju

Which juju should show /usr/local/bin/juju

Re-running quickstart does not show installation of juju.

Note that quickstart will not actually work.

[redir, 2014-06-02 16:09:32]

On 2014/06/02 15:39:35, bac wrote:
> QA instructions:
> 
> The changes include the things you requested plus a later change to set
JUJU_CMD
> for OS X, since brew installs it in /usr/local/bin.
> 
> QA:
> brew uninstall juju
> .venv/bin/python juju-quickstart -e ec2 # Or some other existing environment
> 
> Ensure you see:
> Installing the following packages: juju
> 
> Which juju should show /usr/local/bin/juju
> 
> Re-running quickstart does not show installation of juju.
> 
> Note that quickstart will not actually work.

LGTM

[bac, 2014-06-02 19:56:24]

*** Submitted:

Reorganize platform settings.

The first cut of the platform work was a bit unclean with respect to the
dividing lines between the quickstart app code and the parts that can be
re-used as a library.  This branch moves things around to re-attain that
separation.

R=redir
CC=
https://codereview.appspot.com/101980050