MC-4416: Convert CreateProductAttributeEntityTest to MFTF

- Revert change to existing element name

Author: tomreece

app/code/Magento/Catalog/Test/Mftf/ActionGroup/AdminProductAttributeActionGroup.xml

@@ -169,7 +169,7 @@
         <arguments>
             <argument name="attribute" type="entity" defaultValue="productAttributeWysiwyg"/>
         </arguments>
-        <click stepKey="createNewAttribute" selector="{{AdminProductAttributeGridSection.NewAttribute}}"/>
+        <click stepKey="createNewAttribute" selector="{{AdminProductAttributeGridSection.createNewAttributeBtn}}"/>
         <fillField stepKey="fillDefaultLabel" selector="{{AttributePropertiesSection.DefaultLabel}}" userInput="{{attribute.attribute_code}}"/>
         <selectOption selector="{{AttributePropertiesSection.InputType}}" stepKey="checkInputType" userInput="{{attribute.frontend_input}}"/>
         <selectOption selector="{{AttributePropertiesSection.ValueRequired}}" stepKey="checkRequired" userInput="{{attribute.is_required_admin}}"/>

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

@@ -10,7 +10,7 @@
         xsi:noNamespaceSchemaLocation="urn:magento:mftf:Page/etc/SectionObject.xsd">
     <section name="AdminProductAttributeGridSection">
         <element name="AttributeCode" type="text" selector="//td[contains(text(),'{{var1}}')]" parameterized="true" timeout="30"/>
-        <element name="NewAttribute" type="button" selector="#add"/>
+        <element name="createNewAttributeBtn" type="button" selector="button[data-index='add_new_attribute_button']"/>
         <element name="GridFilterFrontEndLabel" type="input" selector="#attributeGrid_filter_frontend_label"/>
         <element name="Search" type="button" selector="button[data-action=grid-filter-apply]" timeout="30"/>
         <element name="ResetFilter" type="button" selector="button[data-action='grid-filter-reset']" timeout="30"/>