Ignore ZipFileTest#testZipFileWithLotsOfEntries failures with CC on N5.

This test sometimes fails with a
java.util.concurrent.TimeoutException on ART Builbot's
hammerhead concurrent collector configuration:
* libcore.java.util.zip.ZipFileTest#testZipFileWithLotsOfEntries

Disable it while we investigate.

Bug: 26711853
Change-Id: I22d2c1f7ae6fc447045dfa0f7075b10e5b2094ae
diff --git a/tools/libcore_failures_concurrent_collector.txt b/tools/libcore_failures_concurrent_collector.txt
index 95d1292..486c64e 100644
--- a/tools/libcore_failures_concurrent_collector.txt
+++ b/tools/libcore_failures_concurrent_collector.txt
@@ -40,7 +40,8 @@
   result: EXEC_FAILED,
   modes: [device],
   names: ["libcore.icu.RelativeDateTimeFormatterTest#test_bug25821045",
-          "libcore.java.text.SimpleDateFormatTest#testLocales"],
+          "libcore.java.text.SimpleDateFormatTest#testLocales",
+          "libcore.java.util.zip.ZipFileTest#testZipFileWithLotsOfEntries"],
   bug: 26711853
 }
 ]