title: Liquibase: procedures rollback
body: <p>I have an .xml file with sql procedure with runOnChange = 'true'. And this procedure was updated last to DATACHANGELOG table.</p>
  <pre><code>...
      &lt;changeSet author=&quot;rozmaryn&quot; id=&quot;040920201357&quot; runOnChange=&quot;true&quot; runInTransaction=&quot;true&quot;&gt;
           &lt;sqlFile path=&quot;storedProcedures/procedureFirst.sql&quot;
                    encoding=&quot;UTF-8&quot;
                    relativeToChangelogFile=&quot;true&quot;/&gt;
      &lt;/changeSet&gt;
  </code></pre>
  <p>But if I rollback for example &quot;rollbackCount=5&quot;, I have an error.
  I know that I can add <code>&lt;rollback&gt;&lt;/rollback&gt;</code> node, but since I have runOnChange I would like to skip  rollback of the procedure by command. It is possible?</p>