With Azure, management-certificate-path should not be required if management-certificate is set in the juju environment

[John George]

When using quickstart with a juju environment.yaml which has management-certificate: defined the follow error is given:

juju --debug quickstart -e test-release-azure2 --constraints mem=2G --no-browser /tmp/landscape-scalable.yaml
2015-01-16 20:54:52 INFO juju.cmd supercommand.go:37 running juju [1.20.14-trusty-amd64 gc]
usage: juju-quickstart [-h] [-e ENV_NAME] [-n BUNDLE_NAME] [-i]
                       [--environments-file ENV_FILE]
                       [--gui-charm-url CHARM_URL] [--no-browser]
                       [--distro-only] [--ppa] [--version] [--debug]
                       [--description] [--upload-tools]
                       [--upload-series UPLOAD_SERIES]
                       [--constraints CONSTRAINTS]
                       [bundle]
juju-quickstart: error: cannot use the test-release-azure2 environment:
a value is required for the management certificate path field
2015-01-16 20:54:53 ERROR juju.cmd supercommand.go:323 subprocess encountered error code 2

The Juju azure provider only requires "management-certificate-path" if "management-certificate" is not set.

With such a environment.yaml, I made the following brute force change and observed that quickstart deployment of a bundle was successful:

diff /usr/lib/python2.7/dist-packages/quickstart/models/envs.py.orig /usr/lib/python2.7/dist-packages/quickstart/models/envs.py
578,584d577
< fields.FilePathField(
< 'management-certificate-path', required=True,
< label='management certificate path',
< help='the path to the pem file associated to the certificate '
< 'uploaded in the Azure management console: '
< 'https://manage.windowsazure.com '
< '(Settings -> Management Certificates)'),