Support setting boolean value for changeBuildStatus property of Jacoco code coverage plugin
default to true for changeBuildStatus's boolean param so that calling the method with no args will set the value to true
If the user doesn't explicitly set changeBuildStatus value, don't write it out to the XML.
Add test for argument variant for changeBuildStatus
Merge pull request #165 from sgtcoolguy/jacoco_fail_boolean

Jacoco code coverage publisher: add support for 'changeBuildStatus' boolean