MAGETWO-87243: Unskip failing MFTF tests for WYSIWYG

- Add conditionClick to see TinyMCE4 and change entity of productAttribute creation regarding changes from mainline

Author: kieuphan2406

dev/tests/acceptance/tests/functional/Magento/FunctionalTest/Newsletter/Test/AdminAddVariableToWYSIWYGNewsletterCest.xml

@@ -10,7 +10,7 @@
     <test name="AddVariableToNewsletter">
         <annotations>
             <features value="MAGETWO-36659-[CMS] WYSIWYG update"/>
-            <stories value="MAGETWO-42158-Variables with WYSIWYG"/>
+            <stories value="MAGETWO-42158-Variable with WYSIWYG"/>
             <group value="Newsletter"/>
             <title value="Admin should be able to add variable to WYSIWYG Editor of Newsletter"/>
             <description value="Admin should be able to add variable to WYSIWYG Editor Newsletter"/>
@@ -38,6 +38,7 @@
         <fillField selector="{{BasicFieldNewsletterSection.senderName}}" userInput="{{_defaultNewsletter.senderName}}" stepKey="fillSenderName" />
         <fillField selector="{{BasicFieldNewsletterSection.senderEmail}}" userInput="{{_defaultNewsletter.senderEmail}}" stepKey="fillSenderEmail" />
         <waitForPageLoad time="10" stepKey="waitForPageLoad21"/>
+        <conditionalClick selector="#toggletext" dependentSelector=".mce-tinymce" visible="false" stepKey="clickBtnIfTinyMCEHidden"/>
         <waitForElementVisible selector="{{NewsletterWYSIWYGSection.TinyMCE4}}" stepKey="waitForTinyMCE4"/>
         <executeJS function="tinyMCE.get('text').setContent('Hello World From Newsletter Template!');" stepKey="executeJSFillContent"/>
         <seeElement selector="{{NewsletterWYSIWYGSection.InsertVariableIcon}}" stepKey="seeInsertVariableIcon" />