MAGETWO-51917: Fix date formats for CreateCustomerBackendEntityTest and UpdateCustomerBackendEntityTest

Author: sevos1984

dev/tests/functional/tests/app/Magento/Customer/Test/TestCase/UpdateCustomerBackendEntityTest.xml

@@ -16,7 +16,7 @@
             <data name="customer/data/lastname" xsi:type="string">Doe%isolation%</data>
             <data name="customer/data/suffix" xsi:type="string">_Suffix%isolation%</data>
             <data name="customer/data/email" xsi:type="string">JohnDoe%isolation%@example.com</data>
-            <data name="customer/data/dob" xsi:type="string">Aug 01, 1986</data>
+            <data name="customer/data/dob" xsi:type="string">Aug 1, 1986</data>
             <data name="customer/data/taxvat" xsi:type="string">123456789001</data>
             <data name="customer/data/gender" xsi:type="string">Male</data>
             <constraint name="Magento\Customer\Test\Constraint\AssertCustomerSuccessSaveMessage" />
@@ -52,7 +52,7 @@
             <data name="customer/data/lastname" xsi:type="string">Doe%isolation%</data>
             <data name="customer/data/suffix" xsi:type="string">_JaneSuffix%isolation%</data>
             <data name="customer/data/email" xsi:type="string">Jane%isolation%@example.com</data>
-            <data name="customer/data/dob" xsi:type="string">Dec 01, 2000</data>
+            <data name="customer/data/dob" xsi:type="string">Dec 1, 2000</data>
             <data name="customer/data/taxvat" xsi:type="string">987654321</data>
             <data name="customer/data/gender" xsi:type="string">Female</data>
             <data name="address/data/prefix" xsi:type="string">Prefix%isolation%_</data>