PHPLIB-463: Make listCollections, listDatabases, and listIndexes operations retryable

src/Operation/ListCollections.php

@@ -130,7 +130,7 @@ class ListCollections implements Executable
             $cmd['maxTimeMS'] = $this->options['maxTimeMS'];
         }
 
-        $cursor = $server->executeCommand($this->databaseName, new Command($cmd), $this->createOptions());
+        $cursor = $server->executeReadCommand($this->databaseName, new Command($cmd), $this->createOptions());
         $cursor->setTypeMap(['root' => 'array', 'document' => 'array']);
 
         return new CollectionInfoCommandIterator(new CachingIterator($cursor));

src/Operation/ListDatabases.php

@@ -98,7 +98,7 @@ class ListDatabases implements Executable
             $cmd['maxTimeMS'] = $this->options['maxTimeMS'];
         }
 
-        $cursor = $server->executeCommand('admin', new Command($cmd), $this->createOptions());
+        $cursor = $server->executeReadCommand('admin', new Command($cmd), $this->createOptions());
         $cursor->setTypeMap(['root' => 'array', 'document' => 'array']);
         $result = current($cursor->toArray());
 

src/Operation/ListIndexes.php

@@ -126,7 +126,7 @@ class ListIndexes implements Executable
         }
 
         try {
-            $cursor = $server->executeCommand($this->databaseName, new Command($cmd), $this->createOptions());
+            $cursor = $server->executeReadCommand($this->databaseName, new Command($cmd), $this->createOptions());
         } catch (DriverRuntimeException $e) {
             /* The server may return an error if the collection does not exist.
              * Check for possible error codes (see: SERVER-20463) and return an