ENYO-3129: Add test on the input value of the Phonegap Build UI.

Link to JIRA ticket : https://enyojs.atlassian.net/browse/ENYO-3129

Tested on Chrome Canary (Windows 7)
Enyo-DCO-1.1-Signed-off-by: Rafik Adiche mahmoud-rafik.adiche@hp.com