Stability control effort

Author: okolesnyk

app/code/Magento/Customer/Test/Mftf/Test/StorefrontUpdateCustomerAddressBelgiumTest.xml

@@ -58,6 +58,7 @@
         <!-- Verify country Belgium can be saved without state as state not required -->
         <actionGroup ref="StoreFrontClickEditDefaultShippingAddressActionGroup" stepKey="clickOnDefaultShippingAddress"/>
         <selectOption selector="{{StorefrontCustomerAddressFormSection.country}}" userInput="Belgium" stepKey="selectCountry"/>
+        <waitForAjaxLoad stepKey="waitForCountryDataToApply" />
         <selectOption selector="{{StorefrontCustomerAddressFormSection.state}}" userInput="Please select a region, state or province." stepKey="selectState"/>
         <actionGroup ref="AdminSaveCustomerAddressActionGroup" stepKey="saveAddress"/>
         <see selector="{{StorefrontCustomerAddressesSection.defaultShippingAddress}}" userInput="Belgium" stepKey="seeAssertCustomerDefaultShippingAddressCountry"/>