Configure report output directory

[janheinrichmerker]

Similar to FindBugs and PMD it would be useful if you could specify the output path for the report like this:

reports {
    xml {
        enabled = true
        destination "$buildDir/reports/coverage/coverage.xml"
    }
    html {
        enabled = true
        destination "$buildDir/reports/coverage/coverage.html"
    }
}