disable plan cache by default

Author: vdegans

exec/java-exec/src/main/resources/drill-module.conf

@@ -697,7 +697,7 @@ drill.exec.options: {
     planner.width.max_per_node: 0,
     planner.width.max_per_query: 1000,
 
-    planner.cache.enable: true,
+    planner.cache.enable: false,
     planner.query.cache.ttl_minutes: 0,
     planner.transform.cache.ttl_minutes: 0,
     planner.query.cache.max_entries_amount: 100,