fix(pool): only transition to DISCONNECTED if reconnect enabled

Author: mbroadst

lib/core/connection/pool.js

@@ -273,7 +273,9 @@ function connectionFailureHandler(pool, event, err, conn) {
   // No more socket available propegate the event
   if (pool.socketCount() === 0) {
     if (pool.state !== DESTROYED && pool.state !== DESTROYING && pool.state !== DRAINING) {
-      stateTransition(pool, DISCONNECTED);
+      if (pool.options.reconnect) {
+        stateTransition(pool, DISCONNECTED);
+      }
     }
 
     // Do not emit error events, they are always close events