Write PMD output to consoleOutput during build (#3223)

If PMD fails in a PRB or other CI flow, this will make it easier to see.
PMD itself has a bunch of other options for report output, but I didn't
see any way to use them via the gradle plugin.

Author: ScottDugas

gradle/check.gradle

@@ -115,6 +115,7 @@ tasks.withType(rootProject.SpotBugsTask) { task ->
 // PMD
 apply plugin: 'pmd'
 pmd {
+    consoleOutput = true
     ignoreFailures = false
     targetJdk = '1.7'
     sourceSets = [sourceSets.main]