Current version of Extended Choice Parameter jenkins plugin
has a feature which you could give descriptions to assign descriptions
to choice values. However current version of jenknis-job-builder does
no support this feature. Add this feature into this commit. It will introduce
three new xml nodes to the generated xml:
<descriptionPropertyValue/>
comma separated list of value descriptions
<descriptionPropertyFile/>
description property file
<descriptionPropertyKey/>
key in the description property file
Change-Id: Ie464a510edf01e21c7e96df2003f2c5f7fb15720