MAGETWO-34528: Contribution of Sprint 24 Work to Mainline

- fixes for build errors

Author: mazhalai

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

@@ -6,5 +6,5 @@
  */
 -->
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/Module/etc/module.xsd">
-    <module name="Magento_Config" schema_version="2.0.0"/>
+    <module name="Magento_Config" setup_version="2.0.0"/>
 </config>

app/code/Magento/Core/Setup/InstallData.php

@@ -21,7 +21,6 @@ class InstallData implements InstallDataInterface
      */
     public function install(ModuleDataSetupInterface $setup, ModuleContextInterface $context)
     {
-        $installer = $setup->createMigrationSetup();
         $setup->startSetup();
 
         /**

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

@@ -6,6 +6,6 @@
  */
 -->
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/Module/etc/module.xsd">
-    <module name="Magento_Variable" schema_version="2.0.0">
+    <module name="Magento_Variable" setup_version="2.0.0">
     </module>
 </config>