Suppress okhttp's ResponseCacheAdapterTest.

This avoids a known SPDY issue that sometimes makes the
related CTS tests fail.

Bug: 18066923
Change-Id: I9540dc3ad6b6a3d7ab37eb77d46dba39b7bbbb7b
diff --git a/expectations/knownfailures.txt b/expectations/knownfailures.txt
index 7f31c73..c5524b6 100644
--- a/expectations/knownfailures.txt
+++ b/expectations/knownfailures.txt
@@ -1464,6 +1464,7 @@
     "com.squareup.okhttp.internal.spdy.SpdyConnectionTest",
     "com.squareup.okhttp.internal.http.HttpOverHttp20Draft09Test",
     "com.squareup.okhttp.internal.http.HttpOverSpdy3Test",
+    "com.squareup.okhttp.internal.http.ResponseCacheAdapterTest",
     "com.squareup.okhttp.internal.http.URLConnectionTest#npnSetsProtocolHeader_SPDY_3",
     "com.squareup.okhttp.internal.http.URLConnectionTest#npnSetsProtocolHeader_HTTP_2",
     "com.squareup.okhttp.internal.http.URLConnectionTest#zeroLengthPost_SPDY_3",