Mark the test as failing while investigating.

Recent linker changes required to increase the scope
of our chroot-like environment on devices. There is however just this
test failing.

Change-Id: I496be04693b6cebefe68a0ac04947ed238b53e0d
diff --git a/tools/libcore_failures.txt b/tools/libcore_failures.txt
index 2040b57..a387036 100644
--- a/tools/libcore_failures.txt
+++ b/tools/libcore_failures.txt
@@ -124,5 +124,11 @@
   description: "Needs kernel updates on host/device",
   result: EXEC_FAILED,
   names: ["libcore.io.OsTest#test_socketPing"]
+},
+{
+  description: "Linker issues in chrooted environment",
+  modes: [device],
+  result: EXEC_FAILED,
+  names: ["org.apache.harmony.tests.java.lang.ProcessManagerTest#testEnvironment"]
 }
 ]