Add JenkinsBuild class to represent a Jenkins Build
New method getBuildTestReport, that receive an URL, instead of a JSONObject
The method getLastBuildStatus now return a JenkinsBuild
Apply of the getLastBuildStatus method that now return a JenkinsBuild
Now TEST_RESULTS return a JenkinsBuild
Source formating, getLastBuild is more appropiate than getLastBuildStatus
Source formating, more descriptive variable names
Remove Pending status
Decide which build to retrieve depending of last build status: completed or failed will be enough to do it