MAGETWO-91658: Wrong Checkout Totals Sort Order in cart

- Added automated test

Author: tsoyaleksey

app/code/Magento/Checkout/Test/Mftf/Test/CheckoutTotalsSortOrderInCartTest.xml

@@ -5,8 +5,7 @@
   * See COPYING.txt for license details.
   */
 -->
-<tests xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-       xsi:noNamespaceSchemaLocation="../../../../../../../dev/tests/acceptance/vendor/magento/magento2-functional-testing-framework/src/Magento/FunctionalTestingFramework/Test/etc/testSchema.xsd">
+<tests xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/testSchema.xsd">
     <test name="CheckoutTotalsSortOrderInCartTest">
         <annotations>
             <title value="Checkout Totals Sort Order configuration and displaying in cart"/>