Note MONGOC_CMD_RAW in executeCommand() option tests

This serves as a reminder that executeCommand() is the execution method for raw commands.

Author: jmikola

tests/manager/manager-executeCommand-004.phpt

@@ -1,5 +1,5 @@
 --TEST--
-MongoDB\Driver\Manager::executeCommand() options
+MongoDB\Driver\Manager::executeCommand() options (MONGOC_CMD_RAW)
 --SKIPIF--
 <?php if (getenv("TRAVIS")) exit("skip This currently tails on Travis because it doesn't run 3.6 yet"); ?>
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>

tests/manager/manager-executeCommand_error-002.phpt

@@ -1,5 +1,5 @@
 --TEST--
-MongoDB\Driver\Manager::executeCommand(): wrong options and values
+MongoDB\Driver\Manager::executeCommand(): wrong options and values (MONGOC_CMD_RAW)
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
 <?php NEEDS('REPLICASET'); CLEANUP(REPLICASET); ?>

tests/server/server-executeCommand_error-001.phpt

@@ -1,5 +1,5 @@
 --TEST--
-MongoDB\Driver\Server::executeCommand(): wrong options and values
+MongoDB\Driver\Server::executeCommand(): wrong options and values (MONGOC_CMD_RAW)
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
 <?php NEEDS('REPLICASET'); CLEANUP(REPLICASET); ?>