language: java
script: ant -f build/build.xml openfire test plugins

language: java
script: ant -Dhalt.on.plugin.error=true -f build/build.xml openfire test plugins

Add -Dhalt.on.plugin.error=true to ant script
Add -Dhalt.on.plugin.error=true to ant script

So that travis-CI will error out when a plugin fails to build.  The default
action is to silently ignore and continue building.
