MC-32679: Create automated Paypal tests

- squash test branch

Author: irenelagno

app/code/Magento/Paypal/Test/Mftf/ActionGroup/SwitchToPayPalGroupBtnActionGroup.xml

@@ -15,6 +15,7 @@
         <arguments>
             <argument name="elementNumber" type="string" defaultValue="0"/>
         </arguments>
+        <waitForElementVisible selector="{{CheckoutPaymentSection.smartButtonPayPalFrame}}" stepKey="waitForIframeVisible"/>
         <!--set ID for iframe of PayPal group button-->
         <executeJS function="document.getElementsByClassName('component-frame')[{{elementNumber}}].setAttribute('name', 'myFrame');" stepKey="setIDForIframe"/>
         <!--switch to iframe of PayPal group button-->

app/code/Magento/Paypal/Test/Mftf/Section/PayPalExpressCheckoutConfigSection/CheckoutPaymentSection.xml

@@ -11,6 +11,7 @@
         <element name="email" type="input" selector="#checkout-customer-email"/>
         <element name="payPalPaymentBraintree" type="radio" selector="#braintree_paypal"/>
         <element name="payPalFrame" type="iframe" selector="//iframe[contains(@class, 'zoid-component-frame zoid-visible')]" timeout="5"/>
+        <element name="smartButtonPayPalFrame" type="iframe" selector=".component-frame" timeout="10"/>
         <element name="PayPalPaymentRadio" type="radio" selector="input#paypal_express.radio" timeout="30"/>
         <element name="PayPalBtn" type="radio" selector=".paypal-button.paypal-button-number-0" timeout="30"/>
     </section>