title: Liquibase noob strikes again - Error on sqlFile tag
body: <p>Im using the sqlFile to include an sql script that creates tables using oracle specific commands (NOCACHE, NO PARALLEL, stuff like that). My master.xml file includes all sql scripts and executes them. However, when it detects a  tag, it fails and prints this error message.</p>
  
  <pre><code>C:\update.bat master.xml
  Migration Failed: cvc-complex-type.2.4.a: Invalid content was found starting with element 'sqlFile'. 
  One of '{
  "http://www.liquibase.org/xml/ns/dbchangelog/1.9":preConditions,
  "http://www.liquibase.org/xml/ns/dbchangelog/1.9":property,
  "http://www.liquibase.org/xml/ns/dbchangelog/1.9":changeSet, 
  "http://www.liquibase.org/xml/ns/dbchangelog/1.9":include,
  "http://www.liquibase.org/xml/ns/dbchangelog/1.9":includeAll
  }' is expected.
  </code></pre>
  
  <p>My master.xml is quite simple</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8" standalone="no"?&gt;
  &lt;databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog/1.9"
                     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                     xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog/1.9 http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-1.9.xsd"&gt;
  
      &lt;sqlFile path="createUsers.sql"/&gt;
  &lt;/databaseChangeLog&gt;
  </code></pre>
  
  <p>Any thoughts will be greatly appreciated.
  Thanks in advance.</p>