Merged PR 82: Add scenario field for enabling chat

Add scenario field for enabling chat

src/main/java/com/olympus/hermione/models/Scenario.java

@@ -38,5 +38,6 @@ public class Scenario {
     private boolean useChatMemory=false;
     private String outputType;
     private boolean canvasEnabled=false;
+    private boolean chatEnabled=false;
 
 }

src/main/java/com/olympus/hermione/stepSolvers/DeleteDocTempSolver.java

@@ -38,7 +38,7 @@ public class DeleteDocTempSolver extends StepSolver {
         if(this.step.getAttributes().containsKey("rag_topk")){
             this.topk = (int) this.step.getAttributes().get("rag_topk");
         }else{
-            this.topk = 1000;
+            this.topk = 5;
         }
 
         if(this.step.getAttributes().containsKey("rag_threshold")){