Expect failure for CtsJdwpTestCases SourceDebugExtension test

Adds an expected failure for the
ReferenceType.SourceDebugExtension. This test has been changed since
ART now supports this extension. Running the test requires building a
secondary DEX file from classes and isn't readily supported by the
build system. For now this test fails in CTS but passes when run via
art/tools/run-jdwp-tests.sh.

Bug: 30109642,37560145
Test: m -j32 cts && cts-tradefed run cts -d -m CtsJdwpTestCases
Change-Id: I742cbeaa986d77e903f77d35db0c519334f5e04f
diff --git a/tests/jdwp/runner/host-side/resources/expectations/jdwp-known-failures.txt b/tests/jdwp/runner/host-side/resources/expectations/jdwp-known-failures.txt
index 3354b62..331b970 100644
--- a/tests/jdwp/runner/host-side/resources/expectations/jdwp-known-failures.txt
+++ b/tests/jdwp/runner/host-side/resources/expectations/jdwp-known-failures.txt
@@ -26,6 +26,7 @@
     "org.apache.harmony.jpda.tests.jdwp.Events.MonitorWaitedTest#testMonitorWaitedForClassOnly",
     "org.apache.harmony.jpda.tests.jdwp.ReferenceType.ClassFileVersionTest#testClassFileVersion001",
     "org.apache.harmony.jpda.tests.jdwp.ReferenceType.NestedTypesTest#testNestedTypes001",
+    "org.apache.harmony.jpda.tests.jdwp.ReferenceType.SourceDebugExtensionTest",
     "org.apache.harmony.jpda.tests.jdwp.ThreadReference.StopTest#testStop001",
     "org.apache.harmony.jpda.tests.jdwp.VirtualMachine.HoldEventsTest#testHoldEvents001",
     "org.apache.harmony.jpda.tests.jdwp.VirtualMachine.ReleaseEventsTest#testReleaseEvents001"