change executor to be management and not cached for stats/status/info APIs

modules/elasticsearch/src/main/java/org/elasticsearch/action/admin/cluster/node/info/TransportNodesInfoAction.java

@@ -50,7 +50,7 @@ public class TransportNodesInfoAction extends TransportNodesOperationAction<Node
     }
 
     @Override protected String executor() {
-        return ThreadPool.Names.CACHED;
+        return ThreadPool.Names.MANAGEMENT;
     }
 
     @Override protected String transportAction() {

modules/elasticsearch/src/main/java/org/elasticsearch/action/admin/cluster/node/stats/TransportNodesStatsAction.java

@@ -50,7 +50,7 @@ public class TransportNodesStatsAction extends TransportNodesOperationAction<Nod
     }
 
     @Override protected String executor() {
-        return ThreadPool.Names.CACHED;
+        return ThreadPool.Names.MANAGEMENT;
     }
 
     @Override protected String transportAction() {

modules/elasticsearch/src/main/java/org/elasticsearch/action/admin/indices/stats/TransportIndicesStatsAction.java

@@ -60,7 +60,7 @@ public class TransportIndicesStatsAction extends TransportBroadcastOperationActi
     }
 
     @Override protected String executor() {
-        return ThreadPool.Names.CACHED;
+        return ThreadPool.Names.MANAGEMENT;
     }
 
     @Override protected String transportAction() {

modules/elasticsearch/src/main/java/org/elasticsearch/action/admin/indices/status/TransportIndicesStatusAction.java

@@ -69,7 +69,7 @@ public class TransportIndicesStatusAction extends TransportBroadcastOperationAct
     }
 
     @Override protected String executor() {
-        return ThreadPool.Names.CACHED;
+        return ThreadPool.Names.MANAGEMENT;
     }
 
     @Override protected String transportAction() {