MAGETWO-66905: OnePageCheckoutDhlTestVariation1 fails

- webapi requires region_id to be int. Provided region_id's are correspond to directory_country_region db table records.

Author: iivashchenko

dev/tests/functional/tests/app/Magento/Customer/Test/Repository/Address.xml

@@ -246,7 +246,8 @@
             <field name="street" xsi:type="string">Augsburger Strabe 41</field>
             <field name="postcode" xsi:type="string">10789</field>
             <field name="country_id" xsi:type="string">Germany</field>
-            <field name="region_id" xsi:type="string">Berlin</field>
+            <field name="region" xsi:type="string">Berlin</field>
+            <field name="region_id" xsi:type="string">82</field>
             <field name="telephone" xsi:type="string">333-33-333-33</field>
         </dataset>
 
@@ -259,7 +260,8 @@
             <field name="street" xsi:type="string">Augsburger Strabe 41</field>
             <field name="postcode" xsi:type="string">10789</field>
             <field name="country_id" xsi:type="string">Germany</field>
-            <field name="region_id" xsi:type="string">Berlin</field>
+            <field name="region" xsi:type="string">Berlin</field>
+            <field name="region_id" xsi:type="string">82</field>
             <field name="telephone" xsi:type="string">333-33-333-33</field>
             <field name="default_billing" xsi:type="string">Yes</field>
             <field name="default_shipping" xsi:type="string">Yes</field>
@@ -273,7 +275,8 @@
             <field name="street" xsi:type="string">Marzellenstrasse 13-17</field>
             <field name="postcode" xsi:type="string">10789</field>
             <field name="country_id" xsi:type="string">Germany</field>
-            <field name="region_id" xsi:type="string">Hessen</field>
+            <field name="region" xsi:type="string">Hessen</field>
+            <field name="region_id" xsi:type="string">86</field>
             <field name="telephone" xsi:type="string">333-33-333-33</field>
         </dataset>