MAGETWO-96379: Cart Price Rule grid count and pagination is wrong

- add selector check

Author: Mariana Lashch

app/code/Magento/SalesRule/Test/Mftf/Section/AdminCartPriceRulesSection.xml

@@ -17,5 +17,6 @@
         <element name="rowByIndex" type="text" selector="tr[data-role='row']:nth-of-type({{var1}})" parameterized="true" timeout="30"/>
         <element name="rulesRow" type="text" selector="//tr[@data-role='row']"/>
         <element name="pageCurrent" type="text" selector="//label[@for='promo_quote_grid_page-current']"/>
+        <element name="totalCount" type="text" selector="span[data-ui-id*='grid-total-count']"/>
     </section>
 </sections>