B2B-2139: [AWS S3] Flaky Tests: StorefrontCustomerCheckoutWithNewCustomerRegistrationAndDisableGuestCheckoutTest & StorefrontAutoGeneratedCouponCodeTest & AdminContentThemesEditTest

 - Fixing flaky tests

Author: dhaecker

app/code/Magento/SalesRule/Test/Mftf/Test/StorefrontAutoGeneratedCouponCodeTest.xml

@@ -122,7 +122,7 @@
                                   stepKey="waitForElementNotDiscountVisible"/>
 
         <!-- Step 11. Log out from storefront -->
-        <actionGroup ref="StorefrontSignOutActionGroup" stepKey="storefrontSignOut"/>
+        <actionGroup ref="StorefrontCustomerLogoutActionGroup" stepKey="storefrontSignOut"/>
 
         <!-- Step: 12-13. Open the Product Page, add the product to Cart, go to Shopping Cart and Apply the same coupon code -->
         <amOnPage url="{{StorefrontProductPage.url($$createSimpleProduct.custom_attributes[url_key]$$)}}" stepKey="openProductPage2"/>