MAGETWO-95798: All country state's are shown for USA when shipping form has custom address attributes.

Author: omiroshnichenko

app/code/Magento/Checkout/Test/Mftf/Section/CheckoutShippingSection.xml

@@ -32,5 +32,6 @@
         <element name="firstShippingMethod" type="radio" selector="//*[@id='checkout-shipping-method-load']//input[@class='radio']"/>
         <element name="defaultShipping" type="button" selector=".billing-address-details"/>
         <element name="stateInput" type="input" selector="input[name=region]"/>
+        <element name="regionOptions" type="select" selector="select[name=region_id] option"/>
     </section>
 </sections>

app/code/Magento/Customer/Test/Mftf/Data/AddressData.xml

@@ -32,6 +32,7 @@
         <data key="vat_id">vatData</data>
         <data key="default_shipping">true</data>
         <data key="default_billing">true</data>
+        <data key="region_qty">66</data>
     </entity>
     <entity name="US_Address_TX" type="address">
         <data key="firstname">John</data>