Add missing import.

Change-Id: I261bcf045264b041bdea8ec0df0fab3c711cd64f
Reviewed-on: http://review.couchbase.org/31732
Tested-by: Michael Nitschinger <[email protected]>
Reviewed-by: Michael Nitschinger <[email protected]>

Author: daschl

src/test/java/net/spy/memcached/ProtocolBaseCase.java

@@ -30,6 +30,7 @@
 import java.util.Collection;
 import java.util.Collections;
 import java.util.Iterator;
+import java.util.List;
 import java.util.Map;
 import java.util.Random;
 import java.util.concurrent.Callable;