Ignore GZIPInputStreamTest#testLongMessage failures with CC.

This test sometimes fails with a
java.util.concurrent.TimeoutException on ART Builbot's
x86-64 concurrent collector configuration:
* libcore.java.util.zip.GZIPInputStreamTest#testLongMessage

Disable it while we investigate.

Bug: 26507762
Change-Id: I319a812ff7e6e95857879b2e653c886020cb462b
1 file changed