Adding FlatRate due to broken test case in PR Build

Author: JhalakMathur

app/code/Magento/Sales/Test/Mftf/Test/StorefrontOrderPagerIsAbsentTest.xml

@@ -20,7 +20,7 @@
         </annotations>
         <before>
             <comment userInput="Comment is added to preserve the step key for backward compatibility" stepKey="LoginAsAdmin"/>
-           
+            <magentoCLI command="config:set {{EnableFlatRateConfigData.path}} {{EnableFlatRateConfigData.value}}" stepKey="enableFlatRate"/>
             <createData entity="_defaultCategory" stepKey="createCategory"/>
             <createData entity="SimpleProduct" stepKey="createProduct01">
                 <requiredEntity createDataKey="createCategory"/>