Catch additional exceptions in the ping function for those who use multiple nodes in their connection pool.

We were running into these errors throughout different stages of upgrading our Elasticsearch server.

Author: josephtaylor-mn

src/Elasticsearch/Client.php

@@ -4,6 +4,8 @@
 
 use Elasticsearch\Common\Exceptions\BadMethodCallException;
 use Elasticsearch\Common\Exceptions\InvalidArgumentException;
+use Elasticsearch\Common\Exceptions\NoNodesAvailableException;
+use Elasticsearch\Common\Exceptions\BadRequest400Exception;
 use Elasticsearch\Common\Exceptions\Missing404Exception;
 use Elasticsearch\Common\Exceptions\TransportException;
 use Elasticsearch\Endpoints\AbstractEndpoint;
@@ -136,6 +138,8 @@ public function ping($params = [])
             return false;
         } catch (TransportException $exception) {
             return false;
+        } catch (NoNodesAvailableException $exception) {
+            return false;
         }
 
         return true;