cloverphp publisher

Capture code coverage reports from PHPUnit, requires the Jenkins Clover
PHP Plugin:
 https://wiki.jenkins-ci.org/display/JENKINS/Clover+PHP+Plugin

Note: whenever the healthy targets are left blank, the v0.3.3 plugin
will fill in default values which then appears in the configuration. I
have ported that in Jenkins Job Builder to ensure clean diff in the Job
Configuration History plugin.

Change-Id: I9010dee62611094840304cdc2e7317b058d6495a
Merge "cloverphp publisher"