Gradle add test logging exceptionFormat = 'full'

gradle/java-module.gradle

@@ -376,6 +376,7 @@ test {
 		// Used in the Travis build so that Travis doesn't end up panicking because there's no output for a long time.
 		testLogging {
 			events "passed", "skipped", "failed"
+			exceptionFormat = 'full'
 		}
 	}
 }