Suppress okhttp's ResponseCacheAdapterTest.

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

Bug: 18066923
Change-Id: I9540dc3ad6b6a3d7ab37eb77d46dba39b7bbbb7b
(cherry picked from commit 65d0f0bec95f576da6214dabff8c41a20f608b80)
1 file changed