Fix HTML reports not being generated for integration tests

Author: graemerocher

grails-gradle-plugin/src/main/groovy/org/grails/gradle/plugin/core/IntegrationTestGradlePlugin.groovy

@@ -72,7 +72,9 @@ class IntegrationTestGradlePlugin implements Plugin<Project> {
 
                     // These must point to the binary test results directory generated by a Test task instance.
                     // If Test task instances are specified directly, this task would depend on them and run them.
-                    reportOn files("$buildDir/test-results/binary/test", "$buildDir/test-results/binary/integrationTest")
+                    reportOn files("$buildDir/test-results/binary/test", "$buildDir/test-results/binary/integrationTest"),
+                             // different versions of Gradle store these results in different places. ugh.
+                             files("$buildDir/test-results/test/binary", "$buildDir/test-results/integrationTest/binary")
                 }
                 integrationTest.finalizedBy mergeTestReports