title: LiquiBase ValidationFailedException. Checksum changed without reason
body: <p>I've got some changelog files and when i try to generate sql files for them i get:
  <strong>ValidationFailedException</strong>.</p>
  
  <pre><code>Caused by: liquibase.exception.ValidationFailedException: Validation Failed:
       13 change sets check sum
            db-changelogs/test1.xml::test-1::rw is now: 7:d41d8cd98f00b204e9800998ecf8427e
  </code></pre>
  
  <p>The problem is <strong>i haven't made any changes</strong> in these files. My collegues work on the same git branch and it works perfectly for them.</p>
  
  <p>I've checked textCoding and some other things but it still doesnt work.
  I run it with ant script. </p>
  
  <p>My database-changelog <strong>(new-db-changelog.xml)</strong>:</p>
  
  
  
  <pre><code>&lt;databaseChangeLog
      xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xmlns:ext="http://www.liquibase.org/xml/ns/dbchangelog-ext"
      xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.1.xsd
      http://www.liquibase.org/xml/ns/dbchangelog-ext http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-ext.xsd"&gt;
  
      &lt;include file="db-changelogs/testl.xml"/&gt;
  
  &lt;/databaseChangeLog&gt;
  </code></pre>
  
  <p>Change log <strong>(test1.xml)</strong>:</p>
  
  <pre><code>&lt;databaseChangeLog
      xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xmlns:ext="http://www.liquibase.org/xml/ns/dbchangelog-ext"
      xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.1.xsd
      http://www.liquibase.org/xml/ns/dbchangelog-ext http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-ext.xsd"&gt;
  
          &lt;changeSet id="test-1" author="rem" &gt;
              &lt;ext:sqlWrapper context="common-schema"&gt;
                  &lt;![CDATA[
      CREATE TABLE common.test(
        id bigint NOT NULL,
        "name" character varying,
        CONSTRAINT test_lb_pkey PRIMARY KEY (id)
      );
                  ]]&gt;
              &lt;/ext:sqlWrapper&gt;
          &lt;/changeSet&gt;
  
      &lt;/databaseChangeLog&gt;
  </code></pre>