fix TimeBoundaryQuery to properly handle timestamps prior to 1970

client/src/main/java/com/metamx/druid/query/timeboundary/TimeBoundaryQuery.java

@@ -42,7 +42,7 @@ import java.util.Map;
  */
 public class TimeBoundaryQuery extends BaseQuery<Result<TimeBoundaryResultValue>>
 {
-  public static final Interval MY_Y2K_INTERVAL = new Interval(new DateTime(0), new DateTime("3000-01-01"));
+  public static final Interval MY_Y2K_INTERVAL = new Interval(new DateTime(Long.MIN_VALUE), new DateTime(Long.MAX_VALUE));
   public static final String MAX_TIME = "maxTime";
   public static final String MIN_TIME = "minTime";
   private static final byte CACHE_TYPE_ID = 0x0;