Disable reindex-from-old tests in windows

In windows we can't reliable git the pid so we skip the
reindex-from-remote tests from old versions of elasticsearch. This
is OK because we aren't really testing windows here anyway. It isn't
great, but should be safe.

qa/reindex-from-old/build.gradle

@@ -24,6 +24,8 @@ should be able to use the standard launching mechanism which
 is more flexible and reliable.
 """
 
+import org.apache.tools.ant.taskdefs.condition.Os
+
 apply plugin: 'elasticsearch.standalone-rest-test'
 apply plugin: 'elasticsearch.rest-test'
 
@@ -49,9 +51,9 @@ dependencies {
   es090 'org.elasticsearch:elasticsearch:0.90.13@zip'
 }
 
-if (project.javaVersion == JavaVersion.VERSION_1_9) {
+if (project.javaVersion == JavaVersion.VERSION_1_9 || Os.isFamily(Os.FAMILY_WINDOWS)) {
   /* We can't run the dependencies with Java 9 so for now we'll skip the whole
-   * thing. */
+   * thing. We can't get the pid files in windows so we skip that as well.... */
   integTest.enabled = false
 } else {
   /* Set up tasks to unzip and run the old versions of ES before running the