MAGETWO-96026: Create MFTF test for MAGETWO-93973

Author: droed89

app/code/Magento/Catalog/Test/Mftf/Section/AdminProductFormSection.xml

@@ -28,7 +28,7 @@
         <element name="advancedPricingLink" type="button" selector="button[data-index='advanced_pricing_button']"/>
         <element name="categoriesDropdown" type="multiselect" selector="div[data-index='category_ids']"/>
         <element name="productQuantity" type="input" selector=".admin__field[data-index=qty] input"/>
-        <element name="advancedInventoryLink" type="input" selector="//button[contains(@data-index, 'advanced_inventory_button')]"/>
+        <element name="advancedInventoryLink" type="button" selector="//button[contains(@data-index, 'advanced_inventory_button')]"/>
         <element name="productStockStatus" type="select" selector="select[name='product[quantity_and_stock_status][is_in_stock]']"/>
         <element name="productWeight" type="input" selector=".admin__field[data-index=weight] input"/>
         <element name="productWeightSelect" type="select" selector="select[name='product[product_has_weight]']"/>

app/code/Magento/Catalog/Test/Mftf/Test/TieredPricingAndQuantityIncrementsWorkWithDecimalinventoryTest.xml

@@ -45,6 +45,7 @@
         <!--Step3. Open *Advanced Pricing* pop-up (Click on *Advanced Pricing* link). Click on *Add* button. Fill *0.5* in *Quantity*-->
         <scrollTo selector="{{AdminProductFormSection.productName}}" stepKey="scrollToProductName"/>
         <click selector="{{AdminProductFormSection.advancedPricingLink}}" stepKey="clickOnAdvancedPricingLink1"/>
+        <waitForElement selector="{{AdminProductFormAdvancedPricingSection.customerGroupPriceAddButton}}" stepKey="waitForAddButton"/>
         <click selector="{{AdminProductFormAdvancedPricingSection.customerGroupPriceAddButton}}" stepKey="clickOnCustomerGroupPriceAddButton"/>
         <fillField selector="{{AdminProductFormAdvancedPricingSection.productTierPriceQtyInput('0')}}" userInput="0.5" stepKey="fillProductTierPriceQty"/>
         <!--Step4. Close *Advanced Pricing* (Click on button *Done*). Save *prod1* (Click on button *Save*)-->