Query DSL: constant_score and filtered queries cache filters by default, remove it, closes elastic#449.

Author: kimchy

modules/elasticsearch/src/main/java/org/elasticsearch/index/query/xcontent/ConstantScoreQueryParser.java

@@ -53,7 +53,7 @@ public class ConstantScoreQueryParser extends AbstractIndexComponent implements
 
         Filter filter = null;
         float boost = 1.0f;
-        boolean cache = true;
+        boolean cache = false;
 
         String currentFieldName = null;
         XContentParser.Token token;

modules/elasticsearch/src/main/java/org/elasticsearch/index/query/xcontent/FilteredQueryParser.java

@@ -53,7 +53,7 @@ public class FilteredQueryParser extends AbstractIndexComponent implements XCont
         Query query = null;
         Filter filter = null;
         float boost = 1.0f;
-        boolean cache = true;
+        boolean cache = false;
 
         String currentFieldName = null;
         XContentParser.Token token;