MAGETWO-67283: quote_address.free_shipping is different depending on whether Magento was upgraded vs installed

Author: nmalevanec

app/code/Magento/OfflineShipping/Setup/UpgradeData.php

@@ -0,0 +1,48 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+namespace Magento\OfflineShipping\Setup;
+
+use Magento\Framework\Setup\ModuleContextInterface;
+use Magento\Framework\Setup\ModuleDataSetupInterface;
+use Magento\Framework\Setup\UpgradeDataInterface;
+use Magento\Quote\Model\Quote\Address;
+
+/**
+ * Upgrade Data script.
+ */
+class UpgradeData implements UpgradeDataInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function upgrade(ModuleDataSetupInterface $setup, ModuleContextInterface $context)
+    {
+        $setup->startSetup();
+        if ($context->getVersion() && version_compare($context->getVersion(), '2.0.1') < 0) {
+            $this->updateQuoteShippingAddresses($setup);
+        }
+        $setup->endSetup();
+    }
+
+    /**
+     * Replace Null with '0' for free_shipping in quote shipping addresses.
+     *
+     * @param ModuleDataSetupInterface $setup
+     * @return void
+     */
+    private function updateQuoteShippingAddresses(ModuleDataSetupInterface $setup)
+    {
+        $setup->getConnection()->update(
+            $setup->getTable('quote_address'),
+            ['free_shipping' => 0],
+            [
+                'address_type = ?' => Address::ADDRESS_TYPE_SHIPPING,
+                new \Zend_Db_Expr('free_shipping IS NULL'),
+            ]
+        );
+    }
+}

app/code/Magento/OfflineShipping/etc/module.xml

@@ -6,7 +6,7 @@
  */
 -->
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
-    <module name="Magento_OfflineShipping" setup_version="2.0.0">
+    <module name="Magento_OfflineShipping" setup_version="2.0.1">
         <sequence>
             <module name="Magento_Store"/>
             <module name="Magento_Sales"/>