MC-37103: Create automated test for "Create order from customer page, free"

Author: mykhailomatiola

app/code/Magento/Sales/Test/Mftf/ActionGroup/AssertAdminFreePaymentActionGroup.xml renamed to app/code/Magento/Sales/Test/Mftf/ActionGroup/AssertAdminFreePaymentMethodExistsOnCreateOrderPageActionGroup.xml

@@ -7,12 +7,12 @@
 -->
 <actionGroups xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/actionGroupSchema.xsd">
-    <actionGroup name="AssertAdminFreePaymentActionGroup">
+    <actionGroup name="AssertAdminFreePaymentMethodExistsOnCreateOrderPageActionGroup">
         <annotations>
             <description>Checks the free payment on the Admin Create Order page.</description>
         </annotations>
         <click selector="{{AdminOrderFormPaymentSection.linkPaymentOptions}}" stepKey="clickPaymentMethods"/>
-        <waitForAjaxLoad stepKey="waitForPaymentBlockLoad"/>
+        <waitForElementVisible selector="{{AdminOrderFormPaymentSection.freePaymentLabel}}" stepKey="waitForPaymentLabelVisible"/>
         <see selector="{{AdminOrderFormPaymentSection.freePaymentLabel}}" userInput="No Payment Information Required" stepKey="checkFreePaymentLabel"/>
     </actionGroup>
 </actionGroups>

app/code/Magento/Sales/Test/Mftf/Section/AdminOrderFormPaymentSection.xml

@@ -15,7 +15,7 @@
         <element name="flatRateOption" type="radio" selector="#s_method_flatrate_flatrate" timeout="30"/>
         <element name="shippingError" type="text" selector="#order[has_shipping]-error"/>
         <element name="freeShippingOption" type="radio" selector="#s_method_freeshipping_freeshipping" timeout="30"/>
-        <element name="linkPaymentOptions" type="button" selector="#order-billing_method_summary>a"/>
+        <element name="linkPaymentOptions" type="button" selector="#order-billing_method_summary>a" timeout="30"/>
         <element name="blockPayment" type="text" selector="#order-billing_method"/>
         <element name="checkMoneyOption" type="radio" selector="#p_method_checkmo" timeout="30"/>
         <element name="checkBankTransfer" type="radio" selector="#p_method_banktransfer" timeout="30"/>