MC-5620: --convert-old-scripts mode does not convert indexes and constraints correctly

Author: fascinosum

dev/tests/setup-integration/testsuite/Magento/Developer/_files/SetupInstall/TestSetupDeclarationModule8/db_schema.xml

@@ -1,10 +1,4 @@
 <?xml version="1.0"?>
-<!--
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
--->
 <schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="urn:magento:framework:Setup/Declaration/Schema/etc/schema.xsd">
     <table name="module8_test_main_table" resource="default" engine="innodb" comment="Main Test Table for Module8">

dev/tests/setup-integration/testsuite/Magento/Developer/_files/SetupInstall/TestSetupDeclarationModule9/db_schema.xml

@@ -1,10 +1,4 @@
 <?xml version="1.0"?>
-<!--
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
--->
 <schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="urn:magento:framework:Setup/Declaration/Schema/etc/schema.xsd">
     <table name="module9_test_main_table" resource="default" engine="innodb" comment="Main Test Table for Module9">

dev/tests/static/testsuite/Magento/Test/Legacy/_files/copyright/blacklist.php

@@ -8,5 +8,6 @@
     '/pub\/opt\/magento\/var/',
     '/COPYING\.txt/',
     '/setup\/src\/Zend\/Mvc\/Controller\/LazyControllerAbstractFactory\.php/',
-    '/app\/code\/(?!Magento)[^\/]*/'
+    '/app\/code\/(?!Magento)[^\/]*/',
+    '#dev/tests/setup-integration/testsuite/Magento/Developer/_files/\S*\.xml$#',
 ];