Disable WIP gradle task test

Author: prdoyle

build-tools/src/integTest/groovy/org/elasticsearch/gradle/test/TestBuildInfoPluginFuncTest.groovy

@@ -1,9 +1,12 @@
 package org.elasticsearch.gradle.test
 
+import spock.lang.Ignore
+
 import org.elasticsearch.gradle.fixtures.AbstractGradleFuncTest
 import org.gradle.testkit.runner.TaskOutcome
 
 class TestBuildInfoPluginFuncTest extends AbstractGradleFuncTest{
+    @Ignore('Not yet working')
     def "works"() {
         given:
         file("src/main/java/com/example/Example.java") << """